1986 Corvette TPI to Carb Conversion - SmokinVette.com Forums
SmokinVette.com Home
  • Corvette Forum
  • Login to Corvette Forums
  • SmokinVette.com
  • About SmokinVette.com
  • Corvette Forum
  • Corvette Gallery
  • Corvette Parts
  • Corvette Yellow Pages
SmokinVette.com Forums : Corvette Forums : C4 Corvette Forums : C4 Tech & Performance : 1986 Corvette TPI to Carb Conversion
C4 Tech & Performance

Reply
Thread Tools Search this Thread Display Modes
Old 11-27-2012, 05:03 PM   #1
Mdjohns
Smokin Member
 
Join Date: Nov 2012
Location: Butler, AL
Posts: 4
Default 1986 Corvette TPI to Carb Conversion

I have just acquired a 1986 Corvette with a carbureted (chevy 350) I believe. It seems to be a wiring nightmare and I really need advice, schematics, and or wiring diagrams. The cooling fan seems to come on with the key turned to ON position. It has a fusible link. The ignition switch does not start the car. The switch must be in ON position,(fuel pump can be heard, seems to be hooked to fuel pressure regulator under hood) then flip toggle switch(PNK wire with fusible link I think), then I have to press a button to start the car. Is there a simpler way to wire this up so the switch can crank the car. I really appreciate any advice, and or help. God bless.
Mdjohns is offline  
Send a Private Message Reply With Quote
Old 11-27-2012, 08:11 PM   #2
vetteoz
Smokin 2500HP Pro Road Racer
 
Join Date: Jan 2009
Posts: 2,849
Default

Quote:
Originally Posted by Mdjohns View Post
The ignition switch does not start the car. ...... I have to press a button to start the car.
Is there a simpler way to wire this up so the switch can crank the car.
The wiring has been simplified ( butchered )
As everything works as it should;
all you need to do is disconnect the relevant wires ( starter and ignition ) from the aftermarket switches
and return them to the Ign switch at the base of the steering column where they originally came from


__________________
"Being able to "think outside the box" presupposes you were able to think in it." --Bob Lutz

Last edited by vetteoz; 11-27-2012 at 08:17 PM.
vetteoz is offline   Send a Private Message Reply With Quote
Old 11-27-2012, 08:15 PM   #3
vetteoz
Smokin 2500HP Pro Road Racer
 
Join Date: Jan 2009
Posts: 2,849
Default

Quote:
Originally Posted by Mdjohns View Post
The cooling fan seems to come on with the key turned to ON position.
The relay for the fan has been permanently grounded so the fan runs as soon as Ign is on
The cooling fan will require installing a fan switch in the head to operate it at what ever engine temp you select
Something like this ( cheapest )
http://www.racerpartswholesale.com/p...n_Accessories2

or one of these
http://www.ecklerscorvette.com/catal...n+kit&x=36&y=6

Instructions for install here
http://www.ecklerscorvette.com/asset...ette/40416.pdf
__________________
"Being able to "think outside the box" presupposes you were able to think in it." --Bob Lutz
vetteoz is offline   Send a Private Message Reply With Quote
Old 11-28-2012, 07:27 AM   #4
Mdjohns
Smokin Member
 
Join Date: Nov 2012
Location: Butler, AL
Posts: 4
Default

Thanks. I will try this diagram.
Mdjohns is offline   Send a Private Message Reply With Quote
Old 11-28-2012, 10:16 AM   #5
vettex2
Smokin 4000HP World Challenge
 
vettex2's Avatar
 
Join Date: Dec 2009
Location: Spotter
Posts: 4,760
Default

sounds like a nightmare.....
__________________
NASCAR Winston Weekly Racing Series Track Championship Crew Member (Dirt Track)
NASCAR Dodge Weekly Racing Series Track Championship Crew Member (Pavement)
NASCAR Whelen All American Weekly Series Track Championship Crew Member (Pavement)
NASCAR Whelen All American Weekly Series California State Championship Crew Member (Pavement)
vettex2 is offline   Send a Private Message Reply With Quote
Old 11-28-2012, 12:58 PM   #6
vetteoz
Smokin 2500HP Pro Road Racer
 
Join Date: Jan 2009
Posts: 2,849
Default

Quote:
Originally Posted by vettex2 View Post
sounds like a nightmare.....
The rocket launcher Ign switch and push to start buttons are " RICER " mods, not related to the carb swap.
All rather pointless because you have to have the Ign in the RUN position to unlock the steering anyway

Making the fan run with the key on is typical of those that don't know how to bypass the computer control of the fan correctly when doing a carb swap
__________________
"Being able to "think outside the box" presupposes you were able to think in it." --Bob Lutz
vetteoz is offline   Send a Private Message Reply With Quote
Old 11-28-2012, 02:21 PM   #7
lostvette
Smokin 750HP Supercharged Club
 
lostvette's Avatar
 
Join Date: Nov 2010
Location: Naples,Florida
Posts: 833
Default Tpi

Quote:
Originally Posted by vettex2 View Post
sounds like a nightmare.....
__________________
A Nitrous Vette is a HAPPY VETTE !

Last edited by lostvette; 11-28-2012 at 02:24 PM.
lostvette is offline   Send a Private Message Reply With Quote
Old 11-29-2012, 01:00 PM   #8
Hotrod
Smokin 1000HP Twin Turbo Club
 
Hotrod's Avatar
 
Join Date: Jun 2008
Location: A.C., NJ
Posts: 1,423
Arrow

Quote:
Originally Posted by vetteoz View Post
The rocket launcher Ign switch and push to start buttons are " RICER " mods, not related to the carb swap.
All rather pointless because you have to have the Ign in the RUN position to unlock the steering anyway

Making the fan run with the key on is typical of those that don't know how to bypass the computer control of the fan correctly when doing a carb swap
A friend of mine bought an '86 vette with similar problems. To make a long story short, the fan motor hot lead was connected directly to the HEI dist feed, so that when the ignition was turned off the car would stumble for about three seconds until the fan stopped spinning. What happened was the fan motor was acting like a generator and powering the Distributor until the fan stopped spinning hence the run-on after shutdown. What a mess.
Hotrod is offline   Send a Private Message Reply With Quote
Old 11-29-2012, 02:32 PM   #9
fishslayer143@yahoo.com
Smokin 5000HP+ Posting Maniac
 
Join Date: Jun 2009
Location: New Iberia LA
Posts: 8,100
Default

Quote:
Originally Posted by Hotrod View Post
A friend of mine bought an '86 vette with similar problems. To make a long story short, the fan motor hot lead was connected directly to the HEI dist feed, so that when the ignition was turned off the car would stumble for about three seconds until the fan stopped spinning. What happened was the fan motor was acting like a generator and powering the Distributor until the fan stopped spinning hence the run-on after shutdown. What a mess.
those who don t know how, ...SHOULDN T
fishslayer143@yahoo.com is offline   Send a Private Message Reply With Quote
Old 11-29-2012, 08:22 PM   #10
Mdjohns
Smokin Member
 
Join Date: Nov 2012
Location: Butler, AL
Posts: 4
Default

[QUOTE=vetteoz;640966]The wiring has been simplified ( butchered )
As everything works as it should;
all you need to do is disconnect the relevant wires ( starter and ignition ) from the aftermarket switches
and return them to the Ign switch at the base of the steering column where they originally came from


I reconnected and nothing. I will trouble shoot more on this tomorrow. Any suggestions.
Mdjohns is offline   Send a Private Message Reply With Quote
Sponsored Links
Advertisement
 
Reply

Share This Thread
  • Submit Thread to Digg
  • Submit Thread to del.icio.us
  • Submit Thread to Facebook
  • Submit Thread to StumbleUpon
  • Submit Thread to MySpace
  • Submit Thread to Twitter
  • Submit Thread to Google
 

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump




All times are GMT -8. The time now is 08:13 PM. Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 2006-2009 © SmokinVette.Com