'37-4D
Well Known Member
@nana1962409 @Don Jacks @Tim SORRY, I made a mistake: we used R45xls with gasket seat! and on the dyno it was R43xls. Ooopsy daisy!!!
my bad!!!!
348 Tri-Power Build gone wrong / Follow New Rebuild
- Thread starter '37-4D
- Start date
my bad!!!!
'37-4D
Well Known Member
We will check timing but they marked it on the distributor so it was ok. We tried moving it 1/4" anti clockwise to get it to start easier, but that wasn't the issue. At least yesterday lol, the starter and the lean on the car on the jacks were. Will know better in next few days.OK,it's now back to timing.A freind called me and we were thinking that if this thing did have the wrong plugs in it it would likely show more power at the wheels with the right plugs than it did at the flywheel.
Thats what I like to do put in as much initial timing as the starter will stand without laboring,and then set the mechanical advance to bring in the rest.
'37-4D
Well Known Member
Quick update:
To start, we discovered that the same shoddy guys that screwed me in the first place had not rebuilt the carbs as invoiced.
My guys threw in a quick kit temp until I get a pro to look at them. Floats were wrong, parts missing inside, etc...
We now have a new starter, new battery, checked everything by process of elimination and we are down to the igniter. We just ordered a new one. My dudes probably left the key in the ON position and it smoked the Pertronix ignition module
I believe these guys were missing in the centre carb. I scavenged them from a set I had at home
Send the guys these along with the extra carbs in case. One of the needles was bent, disaster....
Carbs all good now. Might get them rechecked in the spring by a friend that specializes just in case.
To start, we discovered that the same shoddy guys that screwed me in the first place had not rebuilt the carbs as invoiced.
My guys threw in a quick kit temp until I get a pro to look at them. Floats were wrong, parts missing inside, etc...
We now have a new starter, new battery, checked everything by process of elimination and we are down to the igniter. We just ordered a new one. My dudes probably left the key in the ON position and it smoked the Pertronix ignition module
I believe these guys were missing in the centre carb. I scavenged them from a set I had at home
Send the guys these along with the extra carbs in case. One of the needles was bent, disaster....
Carbs all good now. Might get them rechecked in the spring by a friend that specializes just in case.
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It looks like your carbs were built from non tripower carbs based on the aluminum base plate in the one picture,original bases would be iron.This won't be a problem if they knew what they were doing,but I suspect they didn't.You may want to reach out to someone that knows their way around the 2g tripowers and see what they recommend for the venturi clusters they made several different ones and the one shown in your pics looks to be one of the smallest,there will be an id number cast or stamped into them near one of the holdown screws.Also some passages will need to be plugged so make sure those have been done.I'm in the same boat as I'm building some carbs for mine too,If I can find out which clusters I need I've got a pretty good assortment and hopefully will have the ones I need.I'm guessing that at least the outboard carbs will need to be the same.
Am I seeing picture #3 showing that the base was not sealed?
'37-4D
Well Known Member
The first guys might have messed around with the base plate. I recall something but can't be sure.
As to whether or not they are true tripower carbs, this question goes out to @Tom Kochtanek who sold me the whole set up on the manifold.
@Tom Kochtanek , can you confirm please
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'37-4D
Well Known Member
They were but they were flooding and fuel was being pushed out I believe.
I just posted what I was sent and am forwarding what info I got.
I just saw this:
"As to whether or not they are true tripower carbs, this question goes out to @Tom Kochtanek who sold me the whole set up on the manifold.
@Tom Kochtanek , can you confirm please"
I don't recall the specifics, I had acquired three sets of tripower intakes and carbs in search of a 1961 date code. I think one intake had a 1959 casting the other 1958 (I kept the 1961 date coded setup as it matched the time frame for my '61 BA. I sold both to members on this Forum. Is yours the one that sold for something like $500 and did it have just two of the carbs when shipped? Pretty sure those were not "correct" tripower carbs
.
Best, TomK
"As to whether or not they are true tripower carbs, this question goes out to @Tom Kochtanek who sold me the whole set up on the manifold.
@Tom Kochtanek , can you confirm please
"I don't recall the specifics, I had acquired three sets of tripower intakes and carbs in search of a 1961 date code. I think one intake had a 1959 casting the other 1958 (I kept the 1961 date coded setup as it matched the time frame for my '61 BA. I sold both to members on this Forum. Is yours the one that sold for something like $500 and did it have just two of the carbs when shipped? Pretty sure those were not "correct" tripower carbs
.Best, TomK
'37-4D
Well Known Member
I just saw this:
"As to whether or not they are true tripower carbs, this question goes out to @Tom Kochtanek who sold me the whole set up on the manifold.
@Tom Kochtanek , can you confirm please
I don't recall the specifics, I had acquired three sets of tripower intakes and carbs in search of a 1961 date code. I think one intake had a 1959 casting the other 1958 (I kept the 1961 date coded setup as it matched the time frame for my '61 BA. I sold both to members on this Forum. Is yours the one that sold for something like $500 and did it have just two of the carbs when shipped? Pretty sure those were not "correct" tripower carbs
Best, TomK
@Tom Kochtanek Mine had all 3 carbs mounted on the manifold. And it was for $400 or $500 yes I believe! You built a sublime box for it to be shipped to Canada LOL
'37-4D
Well Known Member
So, carbs are good for now. There where all sorts of mismatched parts in there. I will have them professionally rebuilt during the winter. But for now they are good.
The issue was the igniter. That is fixed now. Needs to be timed properly (on Friday)
I think we worked out a lot of bugs. With new motor, new carbs, new starter, new igniter in the dis. she will be reliable.
The issue was the igniter. That is fixed now. Needs to be timed properly (on Friday)
I think we worked out a lot of bugs. With new motor, new carbs, new starter, new igniter in the dis. she will be reliable.
'37-4D
Well Known Member
Yes it was up at 1100 for warming it up. We had to burp the air out of the cooling system and installed a new thermostat and a 16 lbs rad cap.
She ran 180. I think that's perfect!
Will of course definitely lower the idle
Gofish
Well Known Member
Quick update:
To start, we discovered that the same shoddy guys that screwed me in the first place had not rebuilt the carbs as invoiced.
My guys rebuilt them. Floats were wrong, parts missing inside, etc...
We now have a new starter, new battery, checked everything by process of elimination and we are down to the igniter. We just ordered a new one. My dudes probably left the key in the ON position and it smoked the Pertronix ignition module
I believe these guys were missing in the centre carb. I scavenged them from a set I had at home
Send the guys these along with the extra carbs in case. One of the needles was bent, disaster....
Carbs all good now. Might get them rechecked in the spring by a friend that specializes just in case.
Those perforated tubes you show (can’t recall their name right now) were only used on the center carb and even then only on the early (maybe just ‘58) applications. That info comes from a GM tri-power booklet I have.
Another thing you might look for is whether your accelerator pumps are among those requiring an aluminum check ball at the bottom of the well. This is different than the steel ball under the spring in one of your pictures. There is a recess in the accelerator pump well for the ball if needed, and without the ball the accelerator pump shot will be inadequate. Like the perforated tubes, not all carbs used the accelerator pump well check ball. I had worked on quite a few 2Gs from the 60s and 70s, but never knew about the check ball until working on my 348 tri-power carbs.
'37-4D
Well Known Member
Thx for the info!
Yea, I've watched a bunch of videos on YouTube and saw the part about the ball for fuel squirts on the Venturi side. I contacted a guy. I will be removing the carbs soon and send them off to him. He knows tri power well. He will rebuild them for me if need be and tune them on his bench using my new cam spec sheet.