Solex twin 40's squeak

[TeddyThom]

Hi guys, Got myself a set of twin 40 solex carbs. However, when I have my engine running, I get an almighty squeak. It literally drowns out the sound of the engine. It is not the belts, having tested and redone them (cam and alternator), it has plenty of fluids, like oil etc, all new gaskets, the carbs run fine, have set them up quite nicely. It has trumpets on them. Does anyone have any ideas of what it could be? I am thinking an air leak of some sort, like around a gasket or something, but I am not sure where or if it is even an air leak. The squeak is like a pulse, and it increases as revs rise, engine is fine, pistons and rings appear to be fine, I just can't work it out. Anyone got any ideas to help me out?

[Southie]

Have a read through this, page 2 maybe of interest.
http://www.311s.org/phpBB3/viewtopic.php?f=3&t=20871

[TeddyThom]

Half the forum don't make sense lol first they were on about injector ports, then something about valves...


Anyone care to dumb it down for me? lol

[Dave A]

It's the inlet manifold gasket. There will be some damage to it or some Gunk stuck around one of the studs. Fit a new gasket and clean the faces that will cure it.

[Balley]

Could be the exhaust gasket, had it before.

[TeddyThom]

It's the inlet manifold gasket. There will be some damage to it or some Gunk stuck around one of the studs. Fit a new gasket and clean the faces that will cure it.
Experience talking there Dave?



Could be the exhaust gasket, had it before.


You had a squeak coming from an exhaust gasket...? Never thought of that. I shall be checking it out today, I shall report back with my findings, if any lol


Appreciated for all your help lads

[Dave A]

Experience talking there Dave?


Absolutely, i belts and water pumps thinking they were the issue. It was the newly fitted gasket, a little of the old gasket stuck on a stud! Does the noise change with revs? If so it's definately the gasket.

[TeddyThom]

It certainly follows the revs. Frequency changes the higher I go. The "pulses" get quicker the higher up the rev range you go. I've sorted out a new gasket but as usual the light has fcuked off and won't be able to get on it til Thursday now. So I will report back findings when I put it all back together then.

Cheers for for all the help everyone.