I'm not looking to get myself killed or anyone else. But...it seems that this question never seems to get a straight answer.

What is a governor switch?? Is it an actual physical switch? Is it something programmed into the prom? How do yu know if your car has it? I'm looking for an answer related to the TPI engines only.

I'll give you an example: 305 TPI - 3.42 gears 16" stock tires, 180km/hr car shuts off(keeping in mind that the speddo was off because of the gears so maybe the 180 was really 165 or something) like hitting a wall.

Last Saturday, 1:00am, cool night and cold air, 305 TPI - 3.08 gears 16" stock tires, 185 and I was at 4500rpm's(these gears didn't effect my speedo. Don't ask why. When I had car emission tested the computer read 40km and my dash read 40km). I let off the throttle because I didn't want the car to shuts off(you know what I mean, the fuel cuts out to slow the car down).

Today, 3 hours ago, hot hazy day, same set up as last week, except this time I was going 195 at 3500rpm's.

Somebody better have an answer to this. I'm losing my mind. I hate problems that are not consistent or tricky to understand.

Again, I'm not trying to solve this problem to go faster. I just want answer to feed my curiousity.

Thanks

 

i dont know the answer to that question...

i know i dont have a "governor" on my roc...

i was doing over 240(needle burried) kms of course and it still would have let me go...so i have no clue....maybe its when the computer thinks there is too much stress on the motor it shuts it down to prevent damage or blowing the motor..

im not really sure...never had a car that had one so i dont know...

iroc2nv

 

I have an pretty good idea of my top speed (been there and done that) and can tell you there ain't no governors on the factory 16inch rim RPO'd cars.

But I sure wouldn't be posting that speed for the world -- or the OPP to read. Think about it.

RP.

 

Borrow someones handheld GPS and take that along then you will know you true mph. I don't think the factory speedo's are all that accurate.

 

I'm with palric on that one.. almost any thirdgen with the 16x8 rims from factory didn't get a limiter in the sense of a physical device to cut speed. The only cars I know of are the 305 TBI auto sets with the 115 mph limiter. The ecm stops acceleration dead in its tracks when the vss indicates 115 mph for those cars.

The vss takes its readings the same way all thirdgen's do, the speedo box at the back of the tranny.

The best way to calculate your speed is not via the speedo, that is truly useless because anything from busted speedo gears, to damaged speedo cable, gears to changing tires or rims throws the speedo off by a good amount.

The way I figure out my speed is via my tach.

Nothing is more accurate than basing speed off true physics. This takes into account engine RPM, transmission ratio, rear differential ratio and tire circumference but there a simple chart on site to eliminate most of that stuff...

https://www.thirdgen.org/newdesign/tech/gears.shtml

Here's how you do it...

Take my car... 3.23 Rear Differential, 700r4 Transmission 0.70 Overdrive Ratio

Max RPM is 4000 RPM in 4th gear.. so what does this tell me about my top speed?

16x8 IROC-Z rims 16" rim diameter, P245/50/ZR16 Tires
Tire height = (0.5 x 245) converted to inches = 9.5 inches roughly
9.5 + 16 = 25.5 inches tire height

Based off chart, taking into account 0.70 ratio when I was in 4th gear...

25.5 inch + 3.23 ratio = 23.1 MPH per 1000 RPM

4000 RPM / 0.70 = 5714 / 1000 RPM = 5.714 x 23.1 =
132 MPH Top speed

I don't trust my speedo because it has a tendancy to bounce and be even affected by the speaker behind the speedo when at high volume...

Remember what gear you're in when doing these calculations, if in 3rd gear you are at 1:1 ratio, in 4th 0.7:1 ratio, in 2nd 1.63:1 ratio... and so forth...

 

theres no way they can charge you for something you said. they still need to prove that a law was broken. saying i was speeding or that i was going to speed tonight does not make me guilty


"Borrow someones handheld GPS and take that along then you will know you true mph. I don't think the factory speedo's are all that accurate."

that mite work but most GPS can not keep up after 100mph. you would need to get a aircraft handheld to work.(some canadian tier GPS mite work i cant speed for all of them)

BTW 220k and never hit a limitor

 

I remember the days when my top speed was like 250 km/h... I also remember my car took forever to get there...

Now I'm stuck at a measly 210 km/h top speed thanks to gearing boo hoo.. at least she accelerates up there a whole @$$load faster...

The point is as long as you have a tpi at the least, you shouldn't have a vss 115 mph limiter on chip...

I'm thinking if you have a leak in the fuel system where you smell fuel, then your system isn't pressurized as it should be then you should hit a brick wall where the fuel pressure isn't enough to support high rpm with high load... hence the brick wall...

Also if you managed to fix that, the tpi system has another brick wall at 4500 which is airflow related as I recall...

 

A couple of days ago I had my ZX6R up to 250kph. I was probably more nervous in my 94 TA when i had it up to 240. Its very rare for me to go that fast. I might do it once with a vehicle I own, just to see what it can do.

 

Thats weird that your cuts out. I know the governors are usually in the tranny's, but with third gens it is probably burnt into the factory program somewhere.

By the way, i've brought the needle way over 240 and slammed her into the trip reset.

I'll never do that again, if the sight didn't scare me the smell did.

 

The most I've had my car up to was 145MPH, not sure what that is in km/h, because my car's speedo stops at 199km/h because of the digital setup... so I put it on English, and got my MPH reading

 

Wasn't trying to say you'd get busted although I don't think that day is far off we are slowly losing anonymity on the web. Thx to the law makers for that.

Just wouldn't want to draw any more attention than necessary from my local constabulatory.

RP.

 

Thanks again guys.

Slade1 - I'll try that formula out. Little confusing at first but I think I got it now.

nblanchard - I completely forgot about the english option. I'll remember that next time out.

To everyone else - at 195 the car felt smooth and easy. Surprisingy very quiet too. I'll plug in my Uncle's Snap-On portable diagnostic kit and take her for a run. I won't go too fast, just enough to get an idea on how off my car's speedo is.

P.S. Make sure the fiancee, g/f or wife isn't in the car when you do this. My ear still hurts!!!!!!

 

I could be wrong here, but I was under the impression that these cars wouldn't go into O/D, if you put your foot to the floor and held it. Don't you need to lift off in drive to allow it to go into O/D, then wide open again?
Just curious. Never tried it.

 

Good question??? I usually drop the pedal and let her go. Come to think of it I don't pay attention to the car shifting through gears. Maybe wide open throttle is stopping me. I don't know. Maybe someelse does.

 

maybe thats your prob..you have an auto...not bashing just making a suggestion....seems that only the auto guys are having the probs getting into higher speeds...

just a thought

iroc2nv

 

As long as you understand how an auto works, you should have no problem getting it to high speeds. Low end autos have a wide open throttle issue where anything past 2/3 throttle will cause a downshift into 3rd gear. Its simply by design. If you go into fourth gear and then go wot and it downshifts to 3rd then you have that issue. For me, I know I have that problem, so I have the kit to fix it, I just haven't installed it. Since building ram air and messing with the tv cable a bit, I've been able to go 3/4 throttle and get in more than enough air to take me to 4000 rpm... I'm suffering heavy header restrictions though so its kinda pointless to put in the kit on my car at this stage... I'd only be tempted to do 4th gear wot shifts and I'll end up burning a band or destroying a clutch pack in the tranny and I just can't afford that...

 

Check out www.thirdgen.org/newdesign/faq/thirdgen.shtml

There's a question near the bottom about the o/d shift at wot and a way to fix it.

 

Kev

I know what you mean by being more nervous in the car than on the bike. Same here, doing 220+ in the car vs. bike....no contest. The only thing you have to be careful of is the CAGERS!

How's the RD coming along, will it be ready for Mosport Track Days next year. This is the first year I went and I'm hooked. We need some more 2-stroke support. http://teamraceready.tripod.com/team...ports/id3.html

Bill

 

Probably won't be ready this season. Its been sitting in the basement for sometime, a victim of too many other projects on the go. It will get alot of attention this winter however. I'm selling my ZX6R, and the RD will be my only bike, so I really want to get it going. I checked out that website, looks pretty cool. I need to get the 400 rebuilt, but haven't really shopped around too much to see where to get it done. Do you think they would be able to do the rebuild? If so, do you know what their prices are like?

Thanks

 

Hey Liam92L98 was the track day held on the 19th of July? I was at Mosport for the superbike weekend. Next time you go you should let me know since I live in Bowmanville. I don't own a bike but I sure do like em.

 

"GM also makes a modified upshift valve which it included in police packages and that part # is 8673948 and sells for around $15. This will allow the tranny to shift into OD at full throttle."

Thanks 16th owner for the link. I'll be calling GM and ordering this part. I bet this small mod will end up taking me a while to install in the tranny.

Thanks again guys

 

Kev

George was rebuilding my cranks for the second RZ, the GP replica project, untill I bought my house and had to put that on the back burner. I think he use to race the RD400, but I have a lot of confidence in his ability.
Email him with your request and tell him Bill from Lisle referred you, so ask him for the good guy price.

Zedder 1 9 9 0

Actually I was there on the 13-14 of July for the track day, and I will definately be there next year. I learned a lot riding on the track, for a first time track rider.

Bill

 

I have the part in my car, not installed, if ya want to see what it looks like before you get it 88redxtsy, I can show ya...

 

Thanks Slade! Where did you get the part? G.M, Summit? Are you going to the track Saturday? If so bring the part with you and I can check it out.

 

Friday night quick meet going on, can show ya there or at the track... I know how to install it, its just I'm a lazy *** when it comes to transmission work (been inside the beast.. scary place)...

I'm part of the do it once, do it right and NEVER do it again crowd... hence why I don't feel like messing with my perfectly running tranny...

On another note, never trust a haynes to rebuild a tranny...

Anyone want my copy???