Testament

Cheers guys, yeah I'm just going to build the motor up first then see what happens. I'm just getting the 124 on the road again now since it blew the h/g a while back but didn't have time to get it going for last weekend.

I'll try and remember to put some pics of the engine build up when it get around to it. so far I've got most of the parts, just procrastinating on the piston/engine block situation. I've got a set of new Volumex pistons but they are standard bore and Im not sure yet if any of the blocks I have are suitable.

If I did go for a 131 I'm thinking something different like a pro street style sedan maybe.

As far as the delta goes, I wouldn't mind putting a T28 or GT25 on it and turning up the boost, maybe stick a 130TC inlet cam in. BUT it's the daily for the moment so I'm kinda loathe to spend more than just maintenance on it. It needs some rust work done first anyways (you have to love italian cars)

With the drawthrough setup you need to keep the path from the carb to the charger and from the charger to the head as short and straight as possible to avoid problems with low speed and cold running/startup when the fuel might not be totally vapourised. With the bypass idea, I guess it is workable but its up to you whether its worth the effort as opposed to just having it going all the time.

- wastegate with how ever much pound spring boost i wanna run in it, probably 5psi, which will be postitioned between charger and carb

-wastegate will open when at idle/no throttle as nowhere for the boost to go and will just vent to air/or maybe back before the charger

The boost pressure is set by the pulley ratio and blower size, you don't need a "wastegate" as such, its just set as whatever it is unless you change the pulley ratio. You could run a blow off valve, since with the blowthrough setup the supercharger will be pumping against a closed throttle.

1974 Fiat 124 Sport Coupe

Discussion thread

Plans:

In the (slow) process of building an evil 8 valve turbo motor for this, but I don't know if I will be able to bring myself to put it in this particular car. Might have to get another shell or maybe a nasty 125 or 131 to put the motor in.

Name : Tom

Location: Taupo

Cars you own: Fiat 124 Coupe, Lancia Delta HF turbo i.e.

Mods to them : none to date. ridiculous engine build in progress.

How you found out about oldschool: Mates