83 replies to this topic

[techieboy]

seems to be the only things people steal off me

Say's the man who had to steal some off me on Sunday.

you have me crappy little ones instead of strong big ones

I found the big strong ones for you but you liked the little ones.

[Welshiejon]

in going all steel na running 12-1 and cat cams might be roller body throttel or jenvy not sure yet but if i dont get the power ill put a turbo on it

Edited by Welshiejon, 24 March 2010 - 11:59 AM.

[The Batman]

very interesting, what bhp you aiming for?

[rabidh]

I've always loved the idea of Roller Barrel ITBs. Did you look into ones that would potentially fit, and prices for them?

[Welshiejon]

I've always loved the idea of Roller Barrel ITBs. Did you look into ones that would potentially fit, and prices for them?

no ill just design and make my own same if i got itb ill make them my self to o would like changeable induction track like f1 but i dont have hydrolics

[rabidh]

no ill just design and make my own same if i got itb ill make them my self to o would like changeable induction track like f1 but i dont have hydrolics

wow, can't wait to see if you do that - the current bits you've done look gorgeous. I'd be worried about getting decent air seals on stuff like roller barrels, but I guess that CNC machine is pretty accurate. Machining direct-to-head ITBs would be amazing.

For the variable length induction, I'm sure you could knock up some telescopic trumpets and use the stored vacuum from the inlet manifold to move a piston. It would only be an on/off type thing, but that would be so much easier to manage/tune (you'd only need a single output from the ECU that turned on at a certain RPM).

edit: Actually forget that - IMO to get anything sensible the intake tract would have to be far too long at non-F1 engine revs (30 inch at 3000rpm -> 12 inch at 7000rpm).

Edited by rabidh, 24 March 2010 - 01:50 PM.

[slindborg]

no ill just design and make my own same if i got itb ill make them my self to o would like changeable induction track like f1 but i dont have hydrolics

wow, can't wait to see if you do that - the current bits you've done look gorgeous. I'd be worried about getting decent air seals on stuff like roller barrels, but I guess that CNC machine is pretty accurate. Machining direct-to-head ITBs would be amazing.

For the variable length induction, I'm sure you could knock up some telescopic trumpets and use the stored vacuum from the inlet manifold to move a piston. It would only be an on/off type thing, but that would be so much easier to manage/tune (you'd only need a single output from the ECU that turned on at a certain RPM).

edit: Actually forget that - IMO to get anything sensible the intake tract would have to be far too long at non-F1 engine revs (30 inch at 3000rpm -> 12 inch at 7000rpm).

easiest way will be a gated intake manifold, similar to vanos

Duratecs have simlar port sizing and spacing to the Z22 heads I nearly succomed to some WRC Focus roller barrels a while back.

[rabidh]

Duratecs have simlar port sizing and spacing to the Z22 heads

mmm... http://cgi.ebay.co.u...=item1c1121a1d0
But 800 quid...

[Welshiejon]

sorry this is tackin so long guys but start of race season and im getting snowed under with work hopping to get yours on this week they are half milled so not much to do [attachment=21944:06042010112.jpg] my latest creation and design brake reservoir for GT cars and anything with a pedal box

Edited by Welshiejon, 06 April 2010 - 06:19 AM.

[NickB787]

No problem Jon looks very sweet

[Welshiejon]

No problem Jon

looks very sweet

here is the final drwing of wht you getting i got 3 up for grabs you ,joe and a spare
[attachment=21945:60-2.PDF]

[techieboy]

i got 3 up for grabs you ,joe and a spare

Well, if you've got a spare, I'll take it off your hands.

It'll be another nice piece of circular machined alloy to have in the boot of the car, to go with the smaller SC pulley. On the off chance I ever get to use either of them properly.

[Welshiejon]

i got 3 up for grabs you ,joe and a spare

Well, if you've got a spare, I'll take it off your hands.

It'll be another nice piece of circular machined alloy to have in the boot of the car, to go with the smaller SC pulley. On the off chance I ever get to use either of them properly.

don't think an alloy trigger wheel would be a good not very magnetic for your sensor

[techieboy]

Mere technicalities. But very good point.

[alanoo]

easiest way will be a gated intake manifold, similar to vanos

Duratecs have simlar port sizing and spacing to the Z22 heads I nearly succomed to some WRC Focus roller barrels a while back.

similar port shape, but bore centers are a bit less than 2mm less on the Duratec

[Welshiejon]

[attachment=22009:Image027.jpg] finaly got on a machine

[NickB787]

[NickB787]

anu update?

[Welshiejon]

Trigger wheels are finished you all will be glad to hear

[Exmantaa]

Jon, You got my PM from April regarding this ^ ?