Tri power help needed
Thread Starter
Cruising
Joined: Jan 2016
Posts: 12
Likes: 0
From: Brandon MS
Here we go
As far as gas leak, sent carbs off to be restored, even though the fuel lines seemed almost impossible to connect there is a small leak on middle carb bottom side at phillips scew. Thought timing was ok but after warms up and u cut off it spits and spudders. Also factor temp gauge read 220 which is to high. Went with alumn radiator everything else is stock.
Cliff
Cliff
Team Owner
Joined: May 2001
Posts: 87,367
Likes: 1,593
From: Western NY
As far as gas leak, sent carbs off to be restored, even though the fuel lines seemed almost impossible to connect there is a small leak on middle carb bottom side at phillips scew. Thought timing was ok but after warms up and u cut off it spits and spudders. Also factor temp gauge read 220 which is to high. Went with alumn radiator everything else is stock.
Cliff
Cliff
What kind of car is it?
What year is it?
What engine is it"
OE tri-power or aftermarket?
You know, IMPORTANT facts like that................
Le Mans Master
Joined: Apr 2015
Posts: 9,432
Likes: 124
LOL you beat me to it! In all seriousness yes you can and should be able to get it dialed in. The leak at the phillips screw is probably the accelerator pump diaphragm.
Thread Starter
Cruising
Joined: Jan 2016
Posts: 12
Likes: 0
From: Brandon MS
Melting Slicks
Joined: Oct 2003
Posts: 2,189
Likes: 830
From: Chapel Hill NC
2025 c3 ('68-'73) of the Year Finalist - Unmodified
2025 C4 of the Year Finalist - Unmodified
2025 C8 Stingray of the Year Finalist - Unmodified
I'm not sure the tripower is causing timing and overheating issues. After fixing the leak, I'd dial in the timing first then tackle the overheating. Back in the day my L89 tripower was my DD and was very reliable.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Burning Brakes
Joined: Apr 2008
Posts: 1,222
Likes: 93
From: shelbyville West Michigan
yes it can be dependable and reliable. problem you need to overcome is "all stock and original". a 48 year old original carb is going to need to be rebuilt (x3)...likely your ignition system as well. are you running the original TI box? is the cooling system all stock and original as well?
Thread Starter
Cruising
Joined: Jan 2016
Posts: 12
Likes: 0
From: Brandon MS
thanks
yes it can be dependable and reliable. problem you need to overcome is "all stock and original". a 48 year old original carb is going to need to be rebuilt (x3)...likely your ignition system as well. are you running the original TI box? is the cooling system all stock and original as well?
Had carbs rebuilt and restored at where I thought was a reliable place. Just finished rebuild. Distributor has been rebuilt (non point) and has an MSD box. Also bought alumn radiator
Thread Starter
Cruising
Joined: Jan 2016
Posts: 12
Likes: 0
From: Brandon MS
Here it is
68 stingray L68 (427 3x2) OE tripower.
Only upgrade is alumn radiator, MSD Box and Rebuilt distributor
Sorry it took so long, busy saving lives. Fixed gas leak in center carb, was running hot and timing problems. I guess you can tell I am not a very good mechanic but enjoy it.
Thread Starter
Cruising
Joined: Jan 2016
Posts: 12
Likes: 0
From: Brandon MS
Thread Starter
Cruising
Joined: Jan 2016
Posts: 12
Likes: 0
From: Brandon MS
Thanks
68 stingray L68 (427 3x2) OE tripower.
Only upgrade is alumn radiator, MSD Box and Rebuilt distributor
Sorry it took so long, busy saving lives. Fixed gas leak in center carb, was running hot and timing problems. I guess you can tell I am not a very good mechanic but enjoy it.
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
Thread Starter
Cruising
Joined: Jan 2016
Posts: 12
Likes: 0
From: Brandon MS
Le Mans Master
Joined: Mar 2001
Posts: 5,738
Likes: 644
From: Lincoln, CA
68 stingray L68 (427 3x2) OE tripower.
Only upgrade is alumn radiator, MSD Box and Rebuilt distributor
Sorry it took so long, busy saving lives. Fixed gas leak in center carb, was running hot and timing problems. I guess you can tell I am not a very good mechanic but enjoy it.
Only upgrade is alumn radiator, MSD Box and Rebuilt distributor
Sorry it took so long, busy saving lives. Fixed gas leak in center carb, was running hot and timing problems. I guess you can tell I am not a very good mechanic but enjoy it.
Racer
Joined: Feb 2014
Posts: 258
Likes: 26
Thread Starter
Cruising
Joined: Jan 2016
Posts: 12
Likes: 0
From: Brandon MS
Carbs
your carbs will not make your car over heat you got two separate problems, however wrong timing will affect the temp of the car. When you assemble the fuel line you might wanna use this plastic tape you wrap around the threads of the fuel line than screw it in snag. There a pain in the a-- there like 8 connections but once you get that done you can ajust the timing of the car. once you do all that time to adjust the a/f mixture of the center carb,there no adjustment for the end carbs. turn the two mixture screws all the way in ( clockwise) back them out half a turn so the motor runs, Get a vacuum gauge hook it up to the intake manifold with the engine at normal idle tune the screws one at a time counter clock wise whitching the vacuum gauge,as the vacuum rises the idle will rise too after you reach the high point if will fall you wanna kept the high point go to the other side and do the same thing now with that done the idle might be to high so just lower the idle to where you want it. Good luck
Will follow directions. Center carb was leaking fuel realky bad. Lucky
Thanks for the info
Burning Brakes
Joined: Apr 2008
Posts: 1,222
Likes: 93
From: shelbyville West Michigan
well any carb'd vehicle from the 60's may not be the best choice for a daily driver, but you have to remember, the tri-power is really just a 2bbl carb 80% of the time and is just like any other 2bl v8 of the era...just has a couple extra carbs/barrels that are vacuum actuated under full throttle. not much different than a quadrajet in theory, just a few more failure modes possible with the extra carb body's/vacuum & fuel lines, etc...that is where people get tripped up once they've been apart and monkeyed with...