C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Switching Crossfire to TPI

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Old May 3, 2006 | 03:05 PM
  #21  
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Originally Posted by BrianY(84-Crossfire)
haha, ever wonder why they didnt produce a 1983?? The joke at the plant is they call it the "caught-fire" not the "crossfire". Did you realize the plant had ALOT of these burn to the ground?
Brian Y.
I know why they didn't produce a 1983 year model, and it had nothing to do with the engine. Did you realize that, although the 1984 was the first year of production of a new car (the C4), that 1984 was the THIRD year of the L83, Crossfire engine? My car is 23 years old. How many people that work in the "repair Hole" were there 22 to 23 years ago? How many were there when the engine WAS new, in 1982? The Crossfire has a bad reputation, much of which is perpetuated by people that never owned, worked on, and in some cases never even saw, a Crossfire. In the 19 years I have owned mine the only drivability issue that has arisen is when the EGR valve failed. That is not a problem unique to the L83 engine.

The TPI is a more technically advance system. But it is no more reliable than the simple TBI system, and the performance is only marginally better, at best. If you are not up to the challenge of figuring out the simple CFI engine, chances are the TPI will drive you nuts. Certainly the CFI has been surpassed over the past two decades, but for the effort and expense, a baby step to the TPI, isn't really the most efficient use of resources. I realize you are half way there, having purchased the parts. If you decide continue, good luck.

RACE ON!!!
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Old May 3, 2006 | 04:22 PM
  #22  
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Originally Posted by CFI-EFI
My car is 23 years old. How many people that work in the "repair Hole" were there 22 to 23 years ago? How many were there when the engine WAS new, in 1982?
That's actually what I was thinking when you said....

Originally Posted by CFI-EFI
It would seem that someone from the birth place, ought to be able to make one of the most plentiful Corvettes ever produced, run like it is supposed to.
I am a little surprised that there does seem to be people there with original CFI experience. While a typical career spans more than 20 years it is usually not with the same employer.
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Old May 3, 2006 | 06:18 PM
  #23  
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Lots of guys are there that moved when the plant came to Bowling Green. The repair hole only consists of 8 guys and 3 of them were there in 1984. Yes I was aware that the CFI was used those 3 years on corvettes as well as it was used on other vehicles. I am not here to sling mud. The response is simple. If it was a superior way of injecting the fuel they would still be using it. I am sorry you got so cranky at my post and I am even more sorry that I responded in the crappy manner that I did. This is not the place. The fact still remains alot of these cars ran perfect and alot of them did not, just like other vehicles. I just happen to get one that was filled with random injection problems so I am making a simple choice to switch them out. The reason they were not produced had more to do with chasis problems than it did with engine problems. The CFI had simple problems that were worked out mostly late in the year however, they found a much more stable platform to use which was the TPI.
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Old May 3, 2006 | 06:50 PM
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Originally Posted by BrianY(84-Crossfire)
Lots of guys are there that moved when the plant came to Bowling Green. The repair hole only consists of 8 guys and 3 of them were there in 1984. Yes I was aware that the CFI was used those 3 years on corvettes as well as it was used on other vehicles. I am not here to sling mud. The response is simple. If it was a superior way of injecting the fuel they would still be using it. I am sorry you got so cranky at my post and I am even more sorry that I responded in the crappy manner that I did. This is not the place. The fact still remains alot of these cars ran perfect and alot of them did not, just like other vehicles. I just happen to get one that was filled with random injection problems so I am making a simple choice to switch them out. The reason they were not produced had more to do with chasis problems than it did with engine problems. The CFI had simple problems that were worked out mostly late in the year however, they found a much more stable platform to use which was the TPI.
I am curious where everyone is getting "three years" from... it was in existance for 1982 and 1984 model years... That is two years.

The reason TPI was delayed had to do with licensing with Bosch and the fact that Cadillac had rights to it...

As for xfire, it isn't perfect... but if you REALLY want to upgrade, there are better ways to go than a 1985 TPI system.

It's not bad, mind you, but the ECU is rather crude (as mentioned earlier).

And the TPI is SO restrictive...

Just some thoughts... the only downside is that alternatives are not that affordable. However, once you go TPI, upgrades do exist... which is more than one can say about xfire (not saying none exist, it's just that the volume of parts for TPI is that much greater).
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Old May 3, 2006 | 07:24 PM
  #25  
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Originally Posted by bogus
I am curious where everyone is getting "three years" from... it was in existance for 1982 and 1984 model years... That is two years.).
Actually there were 84's produced in 83. I believe thats why your seeing 3 years.
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Old May 3, 2006 | 08:13 PM
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Originally Posted by qws
Actually there were 84's produced in 83. I believe thats why your seeing 3 years.
yea, ok, I can buy that...
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Old May 3, 2006 | 08:14 PM
  #27  
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Originally Posted by BrianY(84-Crossfire)
If it was a superior way of injecting the fuel they would still be using it. I am sorry you got so cranky at my post
Cranky? I only get cranky if someone attributes statements and thoughts to me, that aren't mine. Who said CFI was superior? I said, "The TPI is a more technically advance system. But it is no more reliable than the simple TBI system, and the performance is only marginally better, at best.". Cars (in general) are evolutionary. The next is usually better than the last. If you think I said that CFI is superior to TPI, or any other injection system, you have a comprehension problem, I didn't even suggest it.



Originally Posted by BrianY(84-Crossfire)
The reason they were not produced had more to do with chasis problems than it did with engine problems.
Not, "more to do... than it did with engine problems". There were NO problem with the engine that was nearing the end of it's second year of production, when the 1984 Corvette was released.



Originally Posted by BrianY(84-Crossfire)
The CFI had simple problems that were worked out mostly late in the year however, they found a much more stable platform to use which was the TPI.
"mostly late in the year"??? My car was built in June of 1983. It was about number 11,000 of more than 50,000 built, hardly "late in the year". Once again, the CFI wasn't new when they started producing the 1984 Corvettes. If mine can run as well as it does, there is no reason someone with a little gumption couldn't do the same with yours.

RACE ON!!!
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Old May 3, 2006 | 08:18 PM
  #28  
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Originally Posted by bogus
I am curious where everyone is getting "three" from... it was in existance for 1982 and 1984 model years... That is two years.
One equals 1982
Two equals 1983 and
Three equals 1984

One, two, three. Get it? Or don't Firebirds and Camaros count as cars? Not to mention, of course the approx 1 1/2 years of 1984 Corvette production.


Originally Posted by bogus
However, once you go TPI, upgrades do exist... which is more than one can say about xfire.
Why spend all the time and money to install a questionably better induction system (stock TPI) only to spend a fortune and redo all the labor to up grade it? If one cannot abide by the Crossfire, make the change only once and make it worthwhile. Instead of going off like a fart in a skillet.

RACE ON!!!
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Old May 3, 2006 | 10:27 PM
  #29  
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Heh, no wonder they say avoid the forums if you have real questions. Good luck guys. Hope he doesnt spam all your links this way. Thanks for the real help from the other guys. I wont be back.
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Old May 3, 2006 | 11:35 PM
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Originally Posted by CFI-EFI
One equals 1982
Two equals 1983 and
Three equals 1984

One, two, three. Get it? Or don't Firebirds and Camaros count as cars? Not to mention, of course the approx 1 1/2 years of 1984 Corvette production.
WTF are you talking about? Since when did the F-body use the xfire? They had single TBIs...

And I can count. I just don't buy it 100%... it's still only 2 model years. 1982 and 1984.

Why spend all the time and money to install a questionably better induction system (stock TPI) only to spend a fortune and redo all the labor to up grade it? If one cannot abide by the Crossfire, make the change only once and make it worthwhile. Instead of going off like a fart in a skillet.

RACE ON!!!
people do things in their own way, apparently this upsets you. deal with it.
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Old May 3, 2006 | 11:37 PM
  #31  
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Originally Posted by BrianY(84-Crossfire)
Heh, no wonder they say avoid the forums if you have real questions. Good luck guys. Hope he doesnt spam all your links this way. Thanks for the real help from the other guys. I wont be back.
Brian - don't let one ignorant know-it-all spoil your visit here.
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Old May 4, 2006 | 12:30 AM
  #32  
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Originally Posted by bogus
WTF are you talking about? Since when did the F-body use the xfire? They had single TBIs...

And I can count. I just don't buy it 100%... it's still only 2 model years. 1982 and 1984.


people do things in their own way, apparently this upsets you. deal with it.

check the 82 thru 84 engine options for the F bodies, both 305 and 350 engines used CFI as the top option till TPI came along...it was also used in select pickup trucks as well...
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Old May 4, 2006 | 01:16 AM
  #33  
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I have read tons about xfire, and have never heard it was used beyond the 1982 and 1984 Corvette.

Learn something new everyday.

BTW, this is the right way to exchange info... no accusations, no attitude... just free exchange.
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Old May 4, 2006 | 02:36 AM
  #34  
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Hey y'all. The F-bodies use crossfire 305's in 82 and 83. In 84 the L69 305 HO was the top motor, the LG4 305 was base V-8 in F-bods. The single TB cars first apperared in 87 if memory serves correct and were rated 170-175hp or so. The TPI 305(F-body) and 350(Corvette only) debuted in 85. The 305 TPI was denutted in 86 to meet fed standards, the L69 HO discontinued. The 350 didn't show up till 87 in F-bodies.

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Old May 4, 2006 | 11:44 AM
  #35  
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Originally Posted by bogus
WTF are you talking about? Since when did the F-body use the xfire?
Since 1982, Mr. Misinformation.

Originally Posted by bogus
And I can count. I just don't buy it 100%... it's still only 2 model years. 1982 and 1984..
OK! Don't buy it 100%. I'll give you a discount. But no matter how you slice it, or what you pay for it, 1 = 1982, 2 = 1983, 3 = 1984. One, two, three. That is THREE years of Crossfire production.



Originally Posted by bogus
people do things in their own way, apparently this upsets you. deal with it.
I have no problem dealing with it. It is his money. It DOES upset me to see resource wasted for no reason, but it is no skin off of by nose. Forewarned is forearmed.



Originally Posted by bogus
Brian - don't let one ignorant know-it-all spoil your visit here.
Now THERE is an oxymoron. Which is it "ignorant"? Or "know-it-all"? If you pick ignorant, be sure to show what it was that made you make that accusation. Am I putting words in your mouth, again?



Originally Posted by bogus
I have read tons about xfire, and have never heard it was used beyond the 1982 and 1984 Corvette.

Learn something new everyday.

BTW, this is the right way to exchange info... no accusations, no attitude... just free exchange.
TONS?

Originally Posted by CFI-EFI
One equals 1982
Two equals 1983 and
Three equals 1984

One, two, three. Get it? Or don't Firebirds and Camaros count as cars? Not to mention, of course the approx 1 1/2 years of 1984 Corvette production.
Where is the accusation in that post? Attitude? There is no more attitude in my answer, above, than there is in your question.

Originally Posted by bogus
I am curious where everyone is getting "three years" from... it was in existance for 1982 and 1984 model years... That is two years.
Don't go getting all POed at ME, just because YOU don't know what you're talking about. Just take a deep breath.

RACE ON!!!
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Old May 4, 2006 | 12:10 PM
  #36  
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Originally Posted by CFI-EFI
Since 1982, Mr. Misinformation.

OK! Don't buy it 100%. I'll give you a discount. But no matter how you slice it, or what you pay for it, 1 = 1982, 2 = 1983, 3 = 1984. One, two, three. That is THREE years of Crossfire production.



I have no problem dealing with it. It is his money. It DOES upset me to see resource wasted for no reason, but it is no skin off of by nose. Forewarned is forearmed.



Now THERE is an oxymoron. Which is it "ignorant"? Or "know-it-all"? If you pick ignorant, be sure to show what it was that made you make that accusation. Am I putting words in your mouth, again?



TONS?

Where is the accusation in that post? Attitude? There is no more attitude in my answer, above, than there is in your question.

Don't go getting all POed at ME, just because YOU don't know what you're talking about. Just take a deep breath.

RACE ON!!!
gee... I am almost disappointed...

I was expecting much more italics for making a mistake... even more bold... but you almost went easy... I am impressed.

However, it doesn't change the fact that attitude is the problem... and you are effectively bringing out the worst of mine.

If you want to be forwarned, you now have been.

Please note that I POLITELY accepted my error in the post above... which is more than you ever do when you are wrong... oh, wait, you are NEVER WRONG... I keep forgetting you are perfect in every respect... it must be a real bitch living in that skin everyday...
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Old May 4, 2006 | 12:52 PM
  #37  
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Brian, you came here with a simple quest-and I for one as a forum member would like you to return again and let us know how it went.
You certainly didn't deserve to be greeted with such BS-to much of this childish behavior seems to be allowed!
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Old May 4, 2006 | 01:42 PM
  #38  
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Yes Brian, If you are up to the task and think you will gain some improvements in going with a TPI I don't see a problem. After all this is your project and you asked some advise. I have never gone through this experience so my knowledge on this short. BTW there seems to be a pissing match ever week.
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Old May 4, 2006 | 02:39 PM
  #39  
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for whatever its worth to ya Brian stay on this forum and learn from it. Just because Bogus and CFI-EFI are lightly chatting doesn't mean anything. They do it regularly. They know its nothing personal and the next day its all good. You can learn ALOT on this forum and nobody will flame you for asking a question....unless you ask it in the wrong way that is.
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Old May 4, 2006 | 02:57 PM
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BUT! A totally worthless, or worse yet, a totally WRONG post may earn

RACE ON!!!
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