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12/2/15 9:16pm - Original Message: 'Swapping CrossFire For A Carb'
Chic
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Alexandria, VA - USA

Vette(s):
1982 Collector Edition

Joined: 11/2/2015
Posts: 24
OK guys, please, please, advise.  I love my 82' CE, however, when I slow down to about 35 mph or just a little below, then slowly step on the gas to accelerate, it will load up, bog down, quiver and shake it way back up into normal MPH's (55-80) range.  Then all is well.  My local corvette shop said I should think about swapping the CrossFire for a manifold, carb, and different distributor. Would end up with a wholly different running car. It would be a wonderful car to drive. Box the injection system up for when I sell the car to put it back to original.  What say ye????     Chic

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12/3/15 6:19am - Reply: 'Re: Swapping CrossFire For A Carb'
Sarge81 Lifetime Member
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WEST SENECA, NY - USA

Vette(s):
1981 Blue Ice Met. w/pearl ghost flames TKO500 5speed. LS1 Swap 3.45 Dana 44.

Joined: 12/3/2001
Posts: 2376
I think your local corvette shop should learn how to diagnose and repair a cross-fire system or you should look for a different shop.  But that's my opinion. It's a simple throttle body injection system that GM used for years.

I know DaveM had his cross-fire removed along with the original engine. He's running a carb and non-computer controlled distributor with no problems.  




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GEN III 5.7L "LS6" Engine swap
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12/3/15 2:05pm - Reply: 'Re: Swapping CrossFire For A Carb'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19457
Sarge81 said: I think your local corvette shop should learn how to diagnose and repair a cross-fire system...


Yeah....lemmie know how that works out for ya....LOL

The Crossfire systems are not that friggin difficult to diagnose/repair. The problem is, they just don't run that well when they ARE working right, compared to the carbs before and fuel infection after. It was a stop-gap system...that's all it was intended to be. Had it been intended for a longer production life, it would have been more well developed.

That being said.....carbs are much easier to deal with, with a lot fewer leaks to deal with, and...no 'puters to mess with. Approve


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Joel Adams
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12/3/15 8:29pm - Reply: 'Re: Swapping CrossFire For A Carb'
Norsky Lifetime Member
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Twin Lakes, CO - USA

Vette(s):
SOLD - "The Toy" - 1970 Convertible
SOLD - "The Beast" - 1990 ZR-1 (#682)
"BLKBRRD" - 1978 Trans Am, 400ci/285hp, 4 spd, Black w/black interior, Hurst t-tops

Joined: 1/23/2002
Posts: 6714
Bringing Pete's '82 CE back from California we had all kinds of trouble with it running right.  Ended up being a couple of things - throttle body gaskets were shot and the bigger mystery turned out to be the rubber hose connecting the fuel pump to the fuel line (the wrong type of hose was used on a previous fuel pump installation).  To the best of my knowledge he hasn't had any problems with it since.

But if you're dead-set on pulling the Cross-fire I'd give some serious thought to one of the throttle body EFI packages currently on the market over a regular carb setup.  Come spring I'll be installing one of those on "BLKBRRD" in preparation for the move to Colorado in the fall.  Just don't want to be fussing with a regular carb in the mountains.  ("Zen-Master Ken" recommended selecting one that constantly reads the barometric pressure over one that takes a base reading at startup and holds that reading for the duration of the drive.)

|UPDATED|12/3/2015 6:29:24 PM (AZT)|/UPDATED|


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12/4/15 1:02pm - Reply: 'Re: Swapping CrossFire For A Carb'
F4Gary Gold Member
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Grapevine, TX - USA

Vette(s):
1972 LT-1 convertible with factory air.

Joined: 8/26/2006
Posts: 869
Seems to me a conversion to an aftermarket fuel injection should be pretty easy and not as expensive on an '82 since it already has the fuel pump system for it.

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12/4/15 1:33pm - Reply: 'Re: Swapping CrossFire For A Carb'
DaveM Lifetime Member
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Flanders, NJ - USA

Vette(s):
1982 Black, ZZ4, Hooker Side Pipes, 3.55 Rear, Rebuilt & upgraded 700R4, All new suspension, brakes, & new Charcoal interior.

Joined: 1/27/2004
Posts: 2530
I replaced my engine with a ZZ4 crate engine, best move I ever made on my '82. I was having all kids of issues with my CrossFire so I got rid of it. The engine itself is a 4 bolt main and if it's in good shape you should have no problems going to a carb. You will need a fuel pressure regulator to get it down to the 6lbs. range for a carb. Good luck with it.
Dave


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Lifetime Member #116
Dave's '82


   
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12/5/15 4:15pm - Reply: 'Re: Swapping CrossFire For A Carb'
Chic
Former Member
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Alexandria, VA - USA

Vette(s):
1982 Collector Edition

Joined: 11/2/2015
Posts: 24
OK, I have decided to change shops in the Spring when I take the CE out of winter storage.  Going to Tony's in Maryland.  He is rated as one of the best.  I will put it ALL my CE's problems in his hands.  Thanks guys for your advice and words of wisdom.  Chic

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12/8/15 2:14pm - Reply: 'Re: Swapping CrossFire For A Carb'
DaveM Lifetime Member
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Flanders, NJ - USA

Vette(s):
1982 Black, ZZ4, Hooker Side Pipes, 3.55 Rear, Rebuilt & upgraded 700R4, All new suspension, brakes, & new Charcoal interior.

Joined: 1/27/2004
Posts: 2530
Hope all works out well for you, let us know how it goes.
Dave


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Lifetime Member #116
Dave's '82


   
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12/9/15 11:13am - Reply: 'Re: Swapping CrossFire For A Carb'
Reds82CE Lifetime Member
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McKinney, TX - USA

Vette(s):
1982 Collector Edition, Silver-Beige metallic, 40000 miles and counting. 2015 Z51 Red Convertible

Joined: 4/8/2005
Posts: 182
Knock on Wood....but I have never had any issues with my 82CE crossfire.  I have replaces wires/plugs...simple tune up crap....
 
Don't know if you have checked out the Crossfire forum, but if not, have a look at www.crossfireinjection.net   a wealth of info on these engines including people who have detailed the swap out to carb or newer fuel injection.  Also good info on how to tune a crossfire and where to look to fix hiccups like your having.
 
good luck and let us know how things progress.


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Our 82CE

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12/9/15 6:20pm - Reply: 'Re: Swapping CrossFire For A Carb'
Chic
Former Member
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Alexandria, VA - USA

Vette(s):
1982 Collector Edition

Joined: 11/2/2015
Posts: 24
Thanks to all.  Will let you know how it all turns out.  Appreciate all your thoughts.   Chic

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12/10/15 6:00pm - Reply: 'Re: Swapping CrossFire For A Carb'
Vman73
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Gig Harbor, WA - USA

Vette(s):
1973 L82 4 Speed Coupe - Very original, well documented driver/survivor. 2016 Bend Regional NCRS Top Flight.

Joined: 10/2/2014
Posts: 362
Oddly enough, I have everything that someone would need to convert an '82 from carbureted back to cross fire !! I wonder if this stuff will ever be like the old C1/C2 fuel injection units. Back in the day lots of people took their FI units off and replaced with carbs, now the FI stuff is big $$$. Don't think it will happen with cross fire stuff, but you never know. Give me a 4bbl carb and a 4 speed, no computer crap - not eighties computer crap anyway !! Also remember when the '84 came out, good friend of mine got one of the first, I wanted one sooooo bad !! After about six months he told me to hold off cuz he said the cross fire was only a short time offering. I did what he said and waited till '86 to buy a tune port car. Great car, fun to drive. Thought I had gone to Corvette heaven !! So FFWD 30 years and I'm back to playing with points, plugs and an old Rochester, go figure !!

|UPDATED|12/10/2015 4:00:17 PM (AZT)|/UPDATED|


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