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Search: Posts Made By: lukn4trbl
Showing results 1 to 50 of 274
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Forum: Tech / General Engine
06-04-2008, 02:10 PM
Replies: 19
Views: 3,340
Posted By lukn4trbl

Re: burning rich, could it be plug gap

8 PSI max at the fuel inlet.

Have you set the float level? What size power valve in the primary?

Do you see fuel pooling on the base of the intake plenum?
Forum: Tech / General Engine
06-04-2008, 07:24 AM
Replies: 19
Views: 3,340
Posted By lukn4trbl

Re: burning rich, could it be plug gap

Plug gap has nothing to do with air/fuel ratio.

Unless you experiencing misfire from improper gap, the ratio will not change.

There is an issue with the fuel system.
Forum: Carburetors
06-04-2008, 06:47 AM
Replies: 3
Views: 1,012
Posted By lukn4trbl

Re: Vacuum level?

25 PSI is more than enough at idle. With the proper bearing clearances
and volume, even 10 PSI is enough pressure.

Everything is fine, don't worry. Your engine is healthy according to those...
Forum: Carburetors
06-03-2008, 07:41 AM
Replies: 3
Views: 1,012
Posted By lukn4trbl

Re: Vacuum level?

Vacuum levels are determined by several aspects of the engine combo.

Depending on the valve timing, runner volumes, exhaust flow and many
other things, you can determine whether the vacuum...
Forum: Carburetors
06-02-2008, 06:35 AM
Replies: 5
Views: 2,644
Posted By lukn4trbl

Re: holly street avenger options.

No maybe...it's a must! :nod:

Carbs are all about pressure. If you don't know where you're at, you can
begin to tune it.
Forum: Carburetors
05-31-2008, 09:26 AM
Replies: 5
Views: 2,644
Posted By lukn4trbl

Re: holly street avenger options.

It is possible you need to change the power valve to a lower vacuum opening
point.

Stock is 6.5 in./hg.

Do you know your idle manifold vacuum?
Forum: Electronics
05-28-2008, 01:18 PM
Replies: 8
Views: 619
Posted By lukn4trbl

Re: Please help, fan wiring issue and AZ is heatin up fast

Unless you have removed the thermostat, the fan/rad temperature
wont effect the warm up time of the motor.

The thermostat is pretty much closed until ~ 75% of the rated temperature.
Forum: Car Audio
05-28-2008, 12:11 PM
Replies: 11
Views: 1,747
Posted By lukn4trbl

Re: Inverted Square 15...

The voice coils will be wired similarly (in phase with each other).

The easiest way is to flip the wires at the amp, and leave the coils alone.

That analogy might make it easier to...
Forum: Electronics
05-28-2008, 11:36 AM
Replies: 8
Views: 619
Posted By lukn4trbl

Re: Please help, fan wiring issue and AZ is heatin up fast

Yes



Yes, but I'm not sure why you want to do this? When you cut the ignition
from the key, the relay will open the connection at the fan.

The switch you want to drop in the middle...
Forum: Carburetors
05-28-2008, 11:07 AM
Replies: 5
Views: 2,644
Posted By lukn4trbl

Re: holly street avenger options.

How did you come to the conclusion that the PV is blown?

The Avenger Series (as most modern carbs) has blow out protection.

I don't suggest plugging the power valve if this is a street...
Forum: Electronics
05-28-2008, 09:01 AM
Replies: 8
Views: 619
Posted By lukn4trbl

Re: Please help, fan wiring issue and AZ is heatin up fast

Is this a Bosch 5 pin relay?



Sort of...

The voltage potential would be 'over the coil', but there's no current
flow because the ground is 'open'. No worries, it's a very common wiring...
Forum: Carburetors
05-28-2008, 08:46 AM
Replies: 6
Views: 692
Posted By lukn4trbl

Re: No Fuel in... floats?

If the fuel pressure is too strong, it will push the floats down and flood the
bowls/motor.

The regulator is required to limit the pressure to about 6 PSI for Edelbrocks,
and 7-8 PSI for Holley...
Forum: Car Audio
05-28-2008, 08:36 AM
Replies: 11
Views: 1,747
Posted By lukn4trbl

Re: Inverted Square 15...

He's right, unless you have mutiple speakers and they are out of phase
with each other; then you have cancellation issues.

Speakers produce pressure waves by moving air. If one speaker is...
Forum: Tech / General Engine
05-21-2008, 12:53 PM
Replies: 16
Views: 4,505
Posted By lukn4trbl

Re: spark plug and gap recommendation for new ignition system

Let me tell you a little tuning secret...that's not really a secret.

Copper core plugs are the best electrical conductors. Most race engines
use copper core plugs to make the ignitions more...
Forum: Tech / General Engine
05-21-2008, 10:04 AM
Replies: 16
Views: 4,505
Posted By lukn4trbl

Re: spark plug and gap recommendation for new ignition system

Just so you know, there's no need for big buck plugs unless you are concerned
about maintenance life.

A set of $40.00 plugs will do the same thing, except last an additional 10,000 miles.
Forum: Tech / General Engine
05-21-2008, 09:39 AM
Replies: 16
Views: 4,505
Posted By lukn4trbl

Re: spark plug and gap recommendation for new ignition system

Not much unless your current heat range is causing the electrode to warp
and open up due to intense heat, or pre-ignite which is deadly to the motor.
Forum: Tech / General Engine
05-21-2008, 08:13 AM
Replies: 38
Views: 19,001
Posted By lukn4trbl

Re: How to time by ear

Like shooting tiny rocks at a tin can...or small rocks shaking around in a glass jar.



Possibly, it depends how loud the leak is.
Forum: Carburetors
05-21-2008, 07:16 AM
Replies: 25
Views: 843
Posted By lukn4trbl

Re: Calling on demon owners advice

That cam is MASSIVE for a 355 cube motor.

You will need to do some extensive carb mods and also jack-up the initial
like everyone is stating.

Starting off with at least 20 degrees initial...
Forum: Carburetors
05-21-2008, 07:06 AM
Replies: 4
Views: 514
Posted By lukn4trbl

Re: i need some advice

Something in the 600 CFM range; not too much more. Vacuum secondary.

Spread bore would be best for that motor.

Take your pick of manufacturer. I'd stay with something along the lines of
a...
Forum: Tech / General Engine
05-21-2008, 07:02 AM
Replies: 3
Views: 667
Posted By lukn4trbl

Re: Blue Smoke?

Depends on what the blue smoke is from.

You should pull the plugs and look for oil deposits, and also get an e-mission
test. The blue smoke could be a combination of oil and unburned...
Forum: Tech / General Engine
05-21-2008, 06:58 AM
Replies: 16
Views: 4,505
Posted By lukn4trbl

Re: spark plug and gap recommendation for new ignition system

you could probably use a plug one step colder than stock based on your
mods, but it's tough to say without seeing your old set as a starting point.

0.040 - 0.045" is a great starting point for...
Forum: Tech / General Engine
05-21-2008, 06:42 AM
Replies: 38
Views: 19,001
Posted By lukn4trbl

Re: How to time by ear

:eek:

Engine off will be just fine and much safer! :)

You can use sand paper if it's bad enough. Acetone and a rag works really
well once you get all the crap off.

Start off with the...
Forum: Tech / General Engine
05-20-2008, 10:34 AM
Replies: 38
Views: 19,001
Posted By lukn4trbl

Re: How to time by ear

Actually, you're in luck. The 4150 uses the same principle (as do many carbs)
for this port. The diagrams above can be used to describe pretty much any
design.

As for the advanced function of...
Forum: Tech / General Engine
05-17-2008, 06:39 PM
Replies: 38
Views: 19,001
Posted By lukn4trbl

Re: How to time by ear

Let's see if these drawings help you understand what's going on:

This drawing applies to those using a manifold vacuum port (manifold reference).
Notice how the vacuum line connects to a port...
Forum: Tech / General Engine
05-17-2008, 03:30 PM
Replies: 38
Views: 19,001
Posted By lukn4trbl

Re: How to time by ear

Nothing needs to come off to check timing.

Normally you can get a direct shot to the balancer from above the water
pump, or off to the sides by standing near either front tire.

Find a spot...
Forum: Tech / General Engine
05-16-2008, 09:32 AM
Replies: 38
Views: 19,001
Posted By lukn4trbl

Re: How to time by ear

I don't know if your question is directed to Stephen, or everyone in general,
but here are my thoughts:

#1
I wouldn't bother tuning your motor if you have fuel volume, or pressure
issues. Get...
Forum: Tech / General Engine
05-16-2008, 08:39 AM
Replies: 38
Views: 19,001
Posted By lukn4trbl

Re: How to time by ear

It's tough to explain, but if you have ever seen a person move in a dark
room with a strobe light flashing you can better imagine what is happening
with the strobe on the timing gun.

Just...
Forum: Tech / General Engine
05-16-2008, 08:01 AM
Replies: 38
Views: 19,001
Posted By lukn4trbl

Re: How to time by ear

Sort of...

You attach the inductive pick-up (which is the red rectangular object in
the photo) to the #1 spark plug wire.
...
Forum: Carburetors
05-15-2008, 10:00 PM
Replies: 4
Views: 1,462
Posted By lukn4trbl

Re: 650 mighty demon fuel bowls

That's pretty much where the level should be.

The bowl will never be 100% full because the float will rise and close the
needle/seat valve.

From what I can tell your fuel settings are...
Forum: Tech / General Engine
05-15-2008, 08:42 AM
Replies: 38
Views: 19,001
Posted By lukn4trbl

Re: How to time by ear

I dont' know about the power steering pump, most of the engines I work on/build
don't have power accessories :lmao:

YOu can try it...not sure if the belt will slip?

There are two types of...
Forum: Carburetors
05-15-2008, 08:05 AM
Replies: 4
Views: 1,462
Posted By lukn4trbl

Re: 650 mighty demon fuel bowls

The fuel bowls should retain fuel when the engine is off and sitting for
long periods of time.

The fuel inlet located high up on the bowl and even if a little fuel went
back into the supply...
Forum: Car Audio
05-15-2008, 08:00 AM
Replies: 3
Views: 576
Posted By lukn4trbl

Re: Amp help

Something is partially shorting out.

Remove the speakers and unplug the RCA inputs to the amp.

Power up the stereo and observe the fuses. If the fuse does not blow,
you are dealing with a...
Forum: Tech / General Engine
05-15-2008, 07:52 AM
Replies: 38
Views: 19,001
Posted By lukn4trbl

Re: How to time by ear

Piston stops are made of soft metals and they are rounded at the tip.
There is no chance of scratching the piston. Just rotate the crank slowly

Here's a pic of a piston stop:...
Forum: Tech / General Engine
05-15-2008, 07:28 AM
Replies: 38
Views: 19,001
Posted By lukn4trbl

Re: How to time by ear

A quick and fairly accurate way to set initial timing without a light:

- Buy some timing tape for your balancer
- Buy a piston stop
- Buy a timing tab
- Masking tape
- Marker

Procedure:
Forum: Tech / General Engine
05-15-2008, 07:12 AM
Replies: 13
Views: 1,424
Posted By lukn4trbl

Re: How do you rotate distributor back a tooth?

OK, well you keep doing it your way, and I'll continue to align the slot with
a long screw driver.

Keep that horseshoe handy, because one day you'll end up with a cracked
gear and pieces in the...
Forum: Tech / General Engine
05-14-2008, 06:27 AM
Replies: 13
Views: 1,424
Posted By lukn4trbl

Re: How do you rotate distributor back a tooth?

Agreed. It's a good way to grind up the gears.
Forum: Tech / General Engine
05-13-2008, 11:16 AM
Replies: 13
Views: 1,424
Posted By lukn4trbl

Re: How do you rotate distributor back a tooth?

This is correct. You will have to turn the slot about 15 degrees as the gears
are helical and will want to rotate when meshed.

If you look on the distributor shaft (bottom), you will see the...
Forum: Tech / General Engine
05-13-2008, 11:03 AM
Replies: 1
Views: 649
Posted By lukn4trbl

Re: Fine Tuning GMPP Motor...........Please offer up some advice

Without vacuum:

~ 20 initial

36-38 total

Measure the total as it's most important. You will need a dyno, or track
to get the best power/MPH for the timing.
Forum: Carburetors
05-09-2008, 01:27 PM
Replies: 6
Views: 775
Posted By lukn4trbl

Re: Tool's for rebuild?

Awww, you got it all wrong! You forgot the most important tool:

Beer! :lmao:

Don't forget extra gaskets, and hoses. You might end up splitting hoses
during removal.
Forum: Tech / General Engine
05-08-2008, 07:30 AM
Replies: 24
Views: 1,188
Posted By lukn4trbl

Re: Something odd on the cyl wall - normal?

Old blocks tend to have decay issues especially in the water passage areas
that did not use distilled water, or improper coolant mix.

The hone job would normally not cause a failure due to the...
Forum: Carburetors
05-08-2008, 07:10 AM
Replies: 1
Views: 509
Posted By lukn4trbl

Re: fuel delivery

What shuts off, the fuel pump, or the motor?

Do you have a regulator in your setup? If so, what is the pressure set to?

What is the pressure at the carb inlet(s)?

Which carb do you have,...
Forum: Carburetors
05-08-2008, 06:59 AM
Replies: 3
Views: 4,393
Posted By lukn4trbl

Re: Setting up carb for draw-thru blower

It's a good tuning and trouble-shooting device. Ultimately, it's a visual safe
guard in the event the pump/regulator fails. It could save your motor!
Forum: Carburetors
05-07-2008, 12:33 PM
Replies: 3
Views: 4,393
Posted By lukn4trbl

Re: Setting up carb for draw-thru blower

Yes



Probably. Depends on boost, and engine size @ max RPM.
Your wide band will indicate this best, but you'll need to read the
plugs for best results. Also note the HP on dyno, or MPH...
Forum: Tech / General Engine
04-29-2008, 10:28 AM
Replies: 8
Views: 2,106
Posted By lukn4trbl

Re: Engine (diesling at shut off/high revvs in idle)

Also try looking for cracked/loose hoses causing vacuum leaks.

The idle speed (closed throttle angle) can cause dieseling if the transfer
slots are exposed too much. Back off the idle screw if...
Forum: Carburetors
04-29-2008, 10:16 AM
Replies: 28
Views: 1,711
Posted By lukn4trbl

Re: Need suggestions for my 406 w/ 750dp

I would start by splitting the transfer slot exposure between front and back
(within limits of course).

This is tough to do with carbs that don't have a 4 corner idle, but it beats
having to...
Forum: Car Audio
04-29-2008, 06:40 AM
Replies: 5
Views: 755
Posted By lukn4trbl

Re: Radio Help Please

That's exactly my point.

We don't know what car, or year.

We don't know what radio, mfg, or model.

How can we start helping without having the information about his setup?

He also says...
Forum: Car Audio
04-28-2008, 08:59 PM
Replies: 5
Views: 755
Posted By lukn4trbl

Re: Radio Help Please

Gee...ummm, that's a great answer.

Tell me, from that original post are we talking about a stock GM radio?

Are we talking about an aftermarket radio in a Camaro?

Maybe he has one of those...
Forum: Tech / General Engine
04-28-2008, 01:02 PM
Replies: 7
Views: 16,990
Posted By lukn4trbl

Re: 5.7 vortec heads on 305?

You will have less radial clearance, and max lift is limited because the of
the valve interference to the bore.

If I'm not mistaken, the valve angle is also different?
Forum: Tech / General Engine
04-28-2008, 12:09 PM
Replies: 7
Views: 16,990
Posted By lukn4trbl

Re: 5.7 vortec heads on 305?

It's not a very good idea to put Vortec heads on the smaller bore 305.

Even if they bolt to the block, the intake valve will be shrouded and the
lift will be limited.

There are countless...
Forum: Car Audio
04-28-2008, 09:28 AM
Replies: 5
Views: 755
Posted By lukn4trbl

Re: Radio Help Please

First off, you need to give us a model number for the head unit. Each MFG
will have different connections for each wire.

Secondly, are you stating that all of the wires and fuses you tested from ...
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