Fired Up the 348 TriPower

[ThumperNZ]

I have fired up the '61 348 Tri Power I built for Mark & Annie's Bubbletop.
It fired into life easily but had a low speed stumble which smoothed out as revs increased.
It seems to be the middle carburetor at fault, if I put my hand over the carb throat when running, it smooths out, so I disassembled the carb to see what could be wrong, all I found was suspected air bleed plugged.
These carbs were built by a TriPower specialist in Pennsylvania. What I saw in the carbs was good workmanship, so I suspect the plugging has happened during the waiting time since they arrived early this year.
I have tested the vacuum, and have 18" and no detectable leaks.
Also of note, is the need to have maximum idle speed to enable it to run.
https://www.facebook.com/rod.allen.560/videos/1092076734214342/

 

[ThumperNZ]

It turned out to be the center carb idle needle orifices which had been fractured by needles forced in a former life. Probably used as end carb bases with idle screws forced closed.
I have substituted temporarily a "D" base, which performs ok until the US supplier ships another base to me.

 

[nomad59NZ]

It turned out to be the center carb idle needle orifices which had been fractured by needles forced in a former life. Probably used as end carb bases with idle screws forced closed.
I have substituted temporarily a "D" base, which performs ok until the US supplier ships another base to me.

Hey Rod,
Bloody excellent. I know that they are both itching to get the car down south here.
Caught up with them a couple of weeks ago and went round a few sheds. think they enjoyed themselves.

I will be up your way this coming week and passing through probably lateish Wednesday afternoon. Would you be up for a visitor.
Will call you once i know a closer time.

Gav

 

[nomad59NZ]

I have fired up the '61 348 Tri Power I built for Mark & Annie's Bubbletop.
It fired into life easily but had a low speed stumble which smoothed out as revs increased.
It seems to be the middle carburetor at fault, if I put my hand over the carb throat when running, it smooths out, so I disassembled the carb to see what could be wrong, all I found was suspected air bleed plugged.
These carbs were built by a TriPower specialist in Pennsylvania. What I saw in the carbs was good workmanship, so I suspect the plugging has happened during the waiting time since they arrived early this year.
I have tested the vacuum, and have 18" and no detectable leaks.
Also of note, is the need to have maximum idle speed to enable it to run.
https://www.facebook.com/rod.allen.560/videos/1092076734214342/

Have you removed the video! Doesn't appear to be there!

Gav

 

[ThumperNZ]

I don't know. It was posted but not shown, at least not when I looked. How are you supposed to insert videos?

 

[Dick MacKenzie]

I tried to insert a video last evening and all that appeared was a blank box. That was through YouTube. Don't know if they changed their code or linking or what's going on.

 

[Phil Reed]

Don't know if they changed their code or linking or what's going on.

Bet Bob did it?????????!!!!!!!!!!!!!!!!!

 

[DonSSDD]

Bet Bob did it?????????!!!!!!!!!!!!!!!!!

I bet it was that cat he has.....................