TRUMPET LENGTH

[chunkys mk1]

i am going to buy some trumpets for my mk1 escort but because the engine is out at the moment i can't remember how much room i had i am running a crossflow on twin 40s

the trumpets come in ether 16,26,39mm any ideas

[petrolhead]

The theory is that the longer trumpets are better for road use as they shift the peak power further down the rev range. So the longer you can fit in the space you have the better.

[H.P.E harry]

That theory is correct, is used to have 39mm on my 45's but one of them used to knock on my brake master cylinder

[chunkys mk1]

ok thanks