ideas please , i have been making a zetec turbo inlet manifold using a cossy plenum.
the st170 inlet manifold pipes are not straight on no 3 cylinder slightly and out by at least 10mm on number 4 cylinder,so iam struggling to align the manifold.
are all st170 inlets like this? or have i just got a dodgy one?
any ideas on how i could straighten it out?
it just seems to be made from hard plastic.

 

There all like that I think Lloyd (I'll try and get pictures of mine later).

 

cheers,thats what i was thinking.i can make it fit due to using silicone hose to attach the parts,but it just doesnt look right,and it may affect the air flow to that cylinder.

 

Can you not cut the alloy tube and have this welded as to align with the base plate angle.

 

yes i could do that, but it still wont look right,and i would still have the issue of the air flow to that cylinder
if i cant heat it up and bend it,or cut it and plastic weld it,i may have to make another part using a alloy inlet

 

The plastic though is going to be a mission to heat/distort to desired shape I think.

Im not familiar with the St170 head but are the ports / bolt mounts the same as a zetec (silver/black top) or completley different

 

the bolt holes are the same,not sure on the ports.

 

The ports are bigger and if you were to make an alloy inlet you could potentially have more clamping force on the inlet

 

RS1800 inlet and lob the top off it then!

 

The ST170 ports do NOT line up to normal Zetec ports. The stud pattern matches up but the ports are set lower. Hope this helps shed a little light.

 

Is there room to port the inlet to match though

 

https://passionford.com/forum/genera...oy-flange.html


Use one of these

 

cheers mate.

 

used these to mod it slightly

 

 

 

now i know it will bend into shape,need to get another inlet ,and heat it with a paint stripper gun,so i dont have to set fire to the inlet lol

 

Going turbo now then btw?

 

i have 2 engines for it mate, 1 n/a with shit loads of nos.
2 turbo engine gt35 ect ect for when the st170 engine goes bang lol.
the plan is to keep increasing the nos level on the st engine untill it hits 550 bhp or fails.its the easiest way to find the limits of a standard engine and replacements are quite cheap.