Downdraft manifolds

[jeboa]

Looking at a project using some downdraft manifolds and ITBs (FI). Thought I might ask here, as there is more likely a bit more experience with them. What is the maximum ITB throttle size you would recommend?

Also, if anyone has a pair lying around the garage - I would be interested....

[jeboa]

Not being able to extend myself to Jenveys £££, I was considering using these:






Maybe I'm asking for trouble? As a kit (without the manifold) it's about £800 incl import tax, VAT & shipping. The throttles are 50mm.

[jeboa]

Jenvey 4 x throttle pairs £1070 + £250 for airhorns + £200 fuel rail, connectors etc + £60 TPS... so close to double the price...but again, you get what you pay for I suppose....