TPI makeover: WARNING Pic heavy!!
#153
Senior Member
iTrader: (3)
Re: TPI makeover: WARNING Pic heavy!!
Youve for sure got some blowby. My fresh rebuilt motor had that exact thing happen with the puffs coming from the valve covers. My guess is your pistons/piston lost a ring land or top edge. I have pics of my pistons after disassembly. You might get lucky like me and be able to get by without needing a honing. But as I said, it was on a fresh rebuild so I had near perfect hone to begin with.
#155
Member
Thread Starter
iTrader: (1)
Join Date: May 2012
Location: PHX, AZ
Posts: 213
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 K5 Blazer
Engine: 1992 5.7L TPI
Transmission: 700R4
Re: TPI makeover: WARNING Pic heavy!!
So here it is; 3 wire heated o2....
With the harness install is a snap. Could easily be wired without on your own, Im just too lazy and prefer "plug and play".
o2 sensor into the harness, OE connector to harness connector...pink to 12v and black is ground.
PN for the 3 wire is shown, fits a ton of diff GM applications and avaialble just about everywhere from $40 on up.
I snagged the harness on eBay for $25
...off to emissions....
With the harness install is a snap. Could easily be wired without on your own, Im just too lazy and prefer "plug and play".
o2 sensor into the harness, OE connector to harness connector...pink to 12v and black is ground.
PN for the 3 wire is shown, fits a ton of diff GM applications and avaialble just about everywhere from $40 on up.
I snagged the harness on eBay for $25
...off to emissions....
#157
Member
Thread Starter
iTrader: (1)
Join Date: May 2012
Location: PHX, AZ
Posts: 213
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 K5 Blazer
Engine: 1992 5.7L TPI
Transmission: 700R4
Re: TPI makeover: WARNING Pic heavy!!
Anyway:
Emissions test 12/17/12
HC: 6.25 Pass: 4.0
CO: 101 Pass: 40.0
NOX: 4.4 Pass: 5.5
Re-tested today:
HC: 6.15 down from 6.25
CO: 27.3 down from 101
NOX: 6.35 up from 4.4 (AIR system?)
WTF?
#158
Sponsor
iTrader: (92)
Re: TPI makeover: WARNING Pic heavy!!
I'm not sure if the junction comes directly from the battery. If it does the o2 heater will be on all the time causing a parasidic draw. It looks like your cat isn't helping at all. If you want the memcal changed to have a dip socket on it ill cover the shipping and parts and send you back a few chips. I'm not sure the effects on the nox bye not having the air injected into the exhaust. PM me if you want me to work on the memcal again.
#161
Member
Thread Starter
iTrader: (1)
Join Date: May 2012
Location: PHX, AZ
Posts: 213
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 K5 Blazer
Engine: 1992 5.7L TPI
Transmission: 700R4
Re: TPI makeover: WARNING Pic heavy!!
Re-wired the o2 just to be safe. Dont think Ill need the dip socket and agree with you on the the AIR delete.
I think Im gonna try a new cat...maybe a full cat back.
I think Im gonna try a new cat...maybe a full cat back.
#164
Sponsor
iTrader: (92)
Re: TPI makeover: WARNING Pic heavy!!
http://www.summitracing.com/parts/cto-6907
This is what I put on my 92 silverado with a flow master 50 series, I don't have the print out from the last emission testing but it passed with flying colors.
This is what I put on my 92 silverado with a flow master 50 series, I don't have the print out from the last emission testing but it passed with flying colors.
#165
Member
Thread Starter
iTrader: (1)
Join Date: May 2012
Location: PHX, AZ
Posts: 213
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 K5 Blazer
Engine: 1992 5.7L TPI
Transmission: 700R4
Re: TPI makeover: WARNING Pic heavy!!
More than likely going to get a new cat as I have absolutly no idea how old this one is.
As for getting pass emissions:
1) Try again with new cat.
2) If I can show $450 worth of reciepts for repairs (I def have a bit more than $450) I can get a wavier for 1 year.
3) Pull it and re-build or do a 400 swap....
Probably going to request the wavier, $15 fee. However a vehicle can only get 1 waiver...ever, regardless of how many owners it's had. I know mine hasn't, so if I get it, my vehicle will never we eligible for the wavier again....
....then I'll look at replacing the cat....I need to tweak the exhaust anyway due to the rear suspension...may even do muffler too....
...then start scouring CL for a 400 block. Its my understanding that if I go to Vortec heads and a Vortec-TPI manifold "everything" is a direct swap?
As for getting pass emissions:
1) Try again with new cat.
2) If I can show $450 worth of reciepts for repairs (I def have a bit more than $450) I can get a wavier for 1 year.
3) Pull it and re-build or do a 400 swap....
Probably going to request the wavier, $15 fee. However a vehicle can only get 1 waiver...ever, regardless of how many owners it's had. I know mine hasn't, so if I get it, my vehicle will never we eligible for the wavier again....
....then I'll look at replacing the cat....I need to tweak the exhaust anyway due to the rear suspension...may even do muffler too....
...then start scouring CL for a 400 block. Its my understanding that if I go to Vortec heads and a Vortec-TPI manifold "everything" is a direct swap?
#166
Supreme Member
iTrader: (1)
Join Date: May 2004
Location: houston
Posts: 2,262
Likes: 0
Received 0 Likes
on
0 Posts
Car: 83 POS monte carlo 2015 chevy P/U
Engine: 92 5.7 tpi 5.3
Transmission: 700r4 6L60E
Axle/Gears: 2.42 too high
Re: TPI makeover: WARNING Pic heavy!!
where im at, we use parts per million, or PPM, so i've never liked dealing with grams per mile, or GPM on exhaust emissions, but its what your state uses like many others.
odds are the NOx went up because with the O2 sensor working it leaned the motor out which raised combustion chamber temps.
pulling a little timing in the areas where they run the motor at during testing should reduce the NOx and may be enough to pass NOx.
normally pulling 2-4 degrees also reduces CO & HC.
but pulling to much timing can cause HC & CO to go up.
the AIR injection, or lack of it shouldn't affect NOx.
NOx is taken care of by the front bed in the cat.
the second half of the cat where the air is injected into is where HC & CO are handled at.
as a cat gets older it doesn't work as well, so a new cat may help.
odds are the NOx went up because with the O2 sensor working it leaned the motor out which raised combustion chamber temps.
pulling a little timing in the areas where they run the motor at during testing should reduce the NOx and may be enough to pass NOx.
normally pulling 2-4 degrees also reduces CO & HC.
but pulling to much timing can cause HC & CO to go up.
the AIR injection, or lack of it shouldn't affect NOx.
NOx is taken care of by the front bed in the cat.
the second half of the cat where the air is injected into is where HC & CO are handled at.
as a cat gets older it doesn't work as well, so a new cat may help.
#169
Sponsor
iTrader: (92)
Re: TPI makeover: WARNING Pic heavy!!
More than likely going to get a new cat as I have absolutly no idea how old this one is.
As for getting pass emissions:
1) Try again with new cat.
2) If I can show $450 worth of reciepts for repairs (I def have a bit more than $450) I can get a wavier for 1 year.
3) Pull it and re-build or do a 400 swap....
Probably going to request the wavier, $15 fee. However a vehicle can only get 1 waiver...ever, regardless of how many owners it's had. I know mine hasn't, so if I get it, my vehicle will never we eligible for the wavier again....
....then I'll look at replacing the cat....I need to tweak the exhaust anyway due to the rear suspension...may even do muffler too....
...then start scouring CL for a 400 block. Its my understanding that if I go to Vortec heads and a Vortec-TPI manifold "everything" is a direct swap?
As for getting pass emissions:
1) Try again with new cat.
2) If I can show $450 worth of reciepts for repairs (I def have a bit more than $450) I can get a wavier for 1 year.
3) Pull it and re-build or do a 400 swap....
Probably going to request the wavier, $15 fee. However a vehicle can only get 1 waiver...ever, regardless of how many owners it's had. I know mine hasn't, so if I get it, my vehicle will never we eligible for the wavier again....
....then I'll look at replacing the cat....I need to tweak the exhaust anyway due to the rear suspension...may even do muffler too....
...then start scouring CL for a 400 block. Its my understanding that if I go to Vortec heads and a Vortec-TPI manifold "everything" is a direct swap?
#172
Member
Thread Starter
iTrader: (1)
Join Date: May 2012
Location: PHX, AZ
Posts: 213
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 K5 Blazer
Engine: 1992 5.7L TPI
Transmission: 700R4
Re: TPI makeover: WARNING Pic heavy!!
Taking you're advice on the cat; but going with a 40 Series and a cut-out....just for fun
Once all mounted up Ill re-test....
#174
Senior Member
Join Date: Mar 2009
Location: Brick, NJ
Posts: 870
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 Trans Am
Engine: 355 TPI
Transmission: Built T-5
Re: TPI makeover: WARNING Pic heavy!!
ive heard something about longer cold starts but it shouldn't be that long. Ive seen them used personally with little to no effect on cold starts
#175
Re: TPI makeover: WARNING Pic heavy!!
I have duals and 40's on my pickup..It droned so much it was driving me crazy. Added two resonators in front of the mufflers..Has a nice sound to it now and you can have a conversation in the cab.
I too have noticed longer cold starts with the 3's but I also changed to the 89 programing, so I am not sure which is causing it. I crank it for about 2-3 seconds..Crank it again and it fires right up..(around 30* temp).
I too have noticed longer cold starts with the 3's but I also changed to the 89 programing, so I am not sure which is causing it. I crank it for about 2-3 seconds..Crank it again and it fires right up..(around 30* temp).
#176
Member
Thread Starter
iTrader: (1)
Join Date: May 2012
Location: PHX, AZ
Posts: 213
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 K5 Blazer
Engine: 1992 5.7L TPI
Transmission: 700R4
Re: TPI makeover: WARNING Pic heavy!!
Saw something that didnt look right yesterday and fixed it. Truck started right up this AM. If it does again tomorrow then problem solved and Ill share why....
Routed my CB antenna cable today. After much deliberation, Im going to be picking up a 102" whip this weekend to top it all off. Ill get more pics up later, but just wanted to re-cap my CB install.
Scored a Cobra 29 LTD NW on CL. Picked up a 12v accessory outlet for a few $$ and ran it into my center console:
Secured the mount to the side of the console:
Mic clip:
Notched the consloe for the mic wire:
PA:
External speaker. Still not permanently secured, trying to pick a good location for it. I also ran a feed to the pass side dash speaker to try as well once everything is up and running.
Firestik is HQ'd here in Phoenix. Stopped by the shop yesterday. Nice guy, talked my ear off, but gave some valuable info and saved a few $$ by hanging out and listening to some good stories. I went with the "Fire Ring" wire due to the tight mounting location:
As you see, the wire-to-CB end is open, allowing a smaller hole to be drilled in your truck....if needed. Kit comes with the appropiate grommet to use too.
Came into the truck via a hole from the OE tire mount. Secured the wire to the frame, drooping the wire to allow for condensation to run off and filled the hole with scillicon. Loosely ran the wire along the floor to my console. My carpet mat is still in good shape and will help insulate the wire.
A 90* connector emilinates any clearance issues and allows the CB to be tucked in the
console:
Just used some good quality tape to secure the wire here:
The 102 is gonna be huge, I know. Ill make it work.......
Routed my CB antenna cable today. After much deliberation, Im going to be picking up a 102" whip this weekend to top it all off. Ill get more pics up later, but just wanted to re-cap my CB install.
Scored a Cobra 29 LTD NW on CL. Picked up a 12v accessory outlet for a few $$ and ran it into my center console:
Secured the mount to the side of the console:
Mic clip:
Notched the consloe for the mic wire:
PA:
External speaker. Still not permanently secured, trying to pick a good location for it. I also ran a feed to the pass side dash speaker to try as well once everything is up and running.
Firestik is HQ'd here in Phoenix. Stopped by the shop yesterday. Nice guy, talked my ear off, but gave some valuable info and saved a few $$ by hanging out and listening to some good stories. I went with the "Fire Ring" wire due to the tight mounting location:
As you see, the wire-to-CB end is open, allowing a smaller hole to be drilled in your truck....if needed. Kit comes with the appropiate grommet to use too.
Came into the truck via a hole from the OE tire mount. Secured the wire to the frame, drooping the wire to allow for condensation to run off and filled the hole with scillicon. Loosely ran the wire along the floor to my console. My carpet mat is still in good shape and will help insulate the wire.
A 90* connector emilinates any clearance issues and allows the CB to be tucked in the
console:
Just used some good quality tape to secure the wire here:
The 102 is gonna be huge, I know. Ill make it work.......
#177
Member
Thread Starter
iTrader: (1)
Join Date: May 2012
Location: PHX, AZ
Posts: 213
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 K5 Blazer
Engine: 1992 5.7L TPI
Transmission: 700R4
Re: TPI makeover: WARNING Pic heavy!!
Vac leak at the evap canister was causing the loooong starts. Problem solved
#178
Member
Thread Starter
iTrader: (1)
Join Date: May 2012
Location: PHX, AZ
Posts: 213
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 K5 Blazer
Engine: 1992 5.7L TPI
Transmission: 700R4
Re: TPI makeover: WARNING Pic heavy!!
Only other thing I can think of to help this pig pass emissions is a new CAT. I figured why stop there, gonna replace the muffler adn I also needed to re-route the tip beacuse of the shackle flip.
I think Im gonna throw a cut-out on there just for fun too.
Out with the old:
I think Im gonna throw a cut-out on there just for fun too.
Out with the old:
#180
Member
Thread Starter
iTrader: (1)
Join Date: May 2012
Location: PHX, AZ
Posts: 213
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 K5 Blazer
Engine: 1992 5.7L TPI
Transmission: 700R4
Re: TPI makeover: WARNING Pic heavy!!
Looking at the pic with the tape on it.....how are they sized; ID or OD, I was gonna order a 3"
http://www.summitracing.com/parts/cto-6907/overview/
http://www.summitracing.com/parts/cto-6907/overview/
#184
Member
Thread Starter
iTrader: (1)
Join Date: May 2012
Location: PHX, AZ
Posts: 213
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 K5 Blazer
Engine: 1992 5.7L TPI
Transmission: 700R4
Re: TPI makeover: WARNING Pic heavy!!
Was able to determine the cat was installed in 98'....as rich as this thing had been running and for so long, def toast by now.....
#185
Member
Thread Starter
iTrader: (1)
Join Date: May 2012
Location: PHX, AZ
Posts: 213
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 K5 Blazer
Engine: 1992 5.7L TPI
Transmission: 700R4
Re: TPI makeover: WARNING Pic heavy!!
Cat and Supper 44 Series on order, probably wont get installed till next wwekend...
Still cant find the EST connector to set timining? I know what it's supposed to look like and approxiamtely where it's supposed to be...??? Might have to start digging under the dash....
Still cant find the EST connector to set timining? I know what it's supposed to look like and approxiamtely where it's supposed to be...??? Might have to start digging under the dash....
#187
Member
Thread Starter
iTrader: (1)
Join Date: May 2012
Location: PHX, AZ
Posts: 213
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 K5 Blazer
Engine: 1992 5.7L TPI
Transmission: 700R4
Re: TPI makeover: WARNING Pic heavy!!
I just re-did a ton of loom and dont remember seeing it...Ill have to find it at the ecm and try to trace it from there.
#190
Member
Thread Starter
iTrader: (1)
Join Date: May 2012
Location: PHX, AZ
Posts: 213
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 K5 Blazer
Engine: 1992 5.7L TPI
Transmission: 700R4
Re: TPI makeover: WARNING Pic heavy!!
My guess is when I find it, the connector has been snipped and its just tapped together....
#194
Member
Thread Starter
iTrader: (1)
Join Date: May 2012
Location: PHX, AZ
Posts: 213
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 K5 Blazer
Engine: 1992 5.7L TPI
Transmission: 700R4
Re: TPI makeover: WARNING Pic heavy!!
EST disconnected...
Balancer mark located and cleaned:
Timing tab located. Initial check of timing appears to be set to 2*...orange mark
If Im reading the tab correctly and do this right, I just need to loosen the dist and rotate it clockwise till the timing mark is at 6*...roughly the green mark...???
Tighted the dist, re-check timing, disconnect -batt terminal, reconnect esc, reconnect -batt terminal?
Which side is easiest to get to the dist, pass or drive?
Balancer mark located and cleaned:
Timing tab located. Initial check of timing appears to be set to 2*...orange mark
If Im reading the tab correctly and do this right, I just need to loosen the dist and rotate it clockwise till the timing mark is at 6*...roughly the green mark...???
Tighted the dist, re-check timing, disconnect -batt terminal, reconnect esc, reconnect -batt terminal?
Which side is easiest to get to the dist, pass or drive?
#195
Sponsor
iTrader: (92)
Re: TPI makeover: WARNING Pic heavy!!
your right on the timing and timing mark, warm up the engine and shut it off then disconnect the est fire it back up set the timing shut it back down and plug the est back together. Its easier to get to the dizzy from the passenger side a distributor wrench really helps. Once the timing is set you can disconnect the battery to get rid of the code 42.
#196
Member
Thread Starter
iTrader: (1)
Join Date: May 2012
Location: PHX, AZ
Posts: 213
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 K5 Blazer
Engine: 1992 5.7L TPI
Transmission: 700R4
Re: TPI makeover: WARNING Pic heavy!!
Got the timing set...seems like it runs much better. That hard 1-2 shift is gone....
Re-set the IAC. I dont have a tach, so Im guestimating my RPM's... where its set seems to be good until I can get a scanner hooked up.
And after much reading, I am correct in understanding the 90-92' TPS is NOT adjustable?
Re-set the IAC. I dont have a tach, so Im guestimating my RPM's... where its set seems to be good until I can get a scanner hooked up.
And after much reading, I am correct in understanding the 90-92' TPS is NOT adjustable?
#197
Sponsor
iTrader: (92)
Re: TPI makeover: WARNING Pic heavy!!
your right the 90-92 tps is non adjustable but if the holes on the tps are elongated it would be the 85-89 style . with the key on the voltage on the tps blue wire needs to be from 0.660VDC to 0.760VDC, do this after you set the min air speed. But the tps may not be adjustable if its the correct one.
#198
Member
Thread Starter
iTrader: (1)
Join Date: May 2012
Location: PHX, AZ
Posts: 213
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 K5 Blazer
Engine: 1992 5.7L TPI
Transmission: 700R4
Re: TPI makeover: WARNING Pic heavy!!
Speaking of RPM's...I posted this pic awhile back:
...someone said that connector was for a tach? Is there an available oe-aftermarket unit that would just plug into that?
...someone said that connector was for a tach? Is there an available oe-aftermarket unit that would just plug into that?
#199
Senior Member
iTrader: (3)
Join Date: Oct 2012
Location: SC
Posts: 725
Likes: 0
Received 0 Likes
on
0 Posts
Car: '87 IROC-Z | '99 SS
Engine: LB9 | LS1
Transmission: 700R4 | T56
Re: TPI makeover: WARNING Pic heavy!!
Here is a link I found that addresses setting the TPS. I found this last night on ChevyThunder.com
Do it yourself information page
Do it yourself information page
#200
Sponsor
iTrader: (92)
Re: TPI makeover: WARNING Pic heavy!!
That is the tach lead. You just need to pick a aftermarket tach. Most have a selector switch for 4,6 and 8 cylinder. You have a switched power a ground and a illumination that hooks to the headlight switch. The tach wire would run to that pigtail. If you want the part number for a pigtail that would plug into that let me know and I will see if I can provide it for you.