kiddofspeed

ok so i recently did a transplant into my 83, the motor is a 4 port 13b with a weber 45 DCOE and RB wrap around mani.

i did not dissasemble anything, i left it all bolted up during the swap, but in the new car at every RPM there is a loud chirping/whistle coming from the weber. it is not belt squeal but sounds similar.

it ran just fine in the other car.

any ideas?

Jeezus

iTrader: (4)

What gaskets did you use? If you used paper or cork gaskets they will swell/crack, causing a whistling noise.

kiddofspeed

i did not dissasemble anything during the swap except for the header so i didn't need gaskets

but the block to intake mani gasket looks like cardboard... i did not install so not sure. i will replace. thanks.

Jeezus

iTrader: (4)

No problem. Whenever I got that gasket from mazda, it was blue, if that helps.

I had a gasket I made for my OER that was out of cork. After a few days of driving, it would whistle a bit. Found out the gaskets were cork and gave me all the problems.

kiddofspeed

im pretty sure it's homemade stuff. definitly not a mazda gasket.

PercentSevenC

Definitely sounds like you've got a vacuum leak somewhere. The 45 DCOE I'm using came off a motor on which the o-rings in the phenolic spacers got messed up and caused a leak. I removed them and made carb-to-manifold gaskets out of thermostat gaskets. Worked pretty well until I got some real ones.

trochoid

iTrader: (6)

Whistling does sound like it could be a gasket. If the phenolic spacers have a groove for the o-rings, then you definitely need to replace them with new o-rings. I use Hylomar to hold the new o-rings in place, (square peg, round hole), since fresh round o-rings tend to pop out of the not so round groove in the phenolic spacer.

flight_of_pain

if its a new weber, check the casting flash in the bores. I have a 34/34 here that looks like it was cast by third grades, whistles like a ****.

Isaac

kiddofspeed

well it only started doing it after putting the engine in a defferent car so i wouldn't see how the casting flash would be a problem now.

i'll have a look anyway.