Looniest state of A-Series tune?

[minimax]

I was idly wondering to myself this evening whether anyone has tried to turbocharge an 8-port head. It occrred to me that if a sorted 8-port 1380 gives 150 bhp, then the addition of forced induction should make for 200+bhp! who says the A-series is inefficient and can't compete with modern kit!

anyway, is this possible? and if so, why has no one done it!

ps and what would be the likely weak points on the machinery (i'm thinking crank, rods, etc)

[8portChris]

Myself and Neil are working on this at the moment. It has been done before, by Steve Harris most recently, and way back in 1967 .
Its early days yet, but the main problem is going to be getting a low enough compression ratio.
But it WILL be done !

Chris

[Neil8p]

www.arden8port.plus.com/Pics/8pturbo.jpg

[annodomini2]

the metro turbo cup 'works' engines supposedly produced 220bhp+, running the 5 port head!

[alextgreen]

Unfortunately with Metty challenge cars a bit stop became an engine swap. They lasted about 10 minutes.

Madmatt (whom many of you will know) runs an A with a BMW 16v bike head and a T3 strapped on.

[Plotloss]

That drag racing chap that fabs his own cylinder heads has got to be pushing the limits of what you can get from an A.

[kneegrow]

I think 180hp is about the ceiling and that is with some mutant engine. 8 port only necessary for multipoint injection. Alloy head lets you use higher CR's. A lot of alloy heads happen to be 8 ports......Unless you are using MPI, I think it's rather "pub bling". Running special fuels with a turbo is the way forward. Under crown cooling as well as boring and using a different idler gear bearing. Running Castrol R. It isn't really viable for massive horsepowers. Besides, when you have 200hp, it might be a better idea to use another engine driving another 2 wheels rather than vapourise your tyres.
Everything will be less stressed......ideal.

[Dodgy Dave]

But can you still call all those engines an a-series?

[NDT]

Dodgy Dave said:

But can you still call all those engines an a-series?

No you can't.
A B-series with a different head isn't a B-Series, it's an O-Series.
same for the A-series!

Nick

>> Edited by NDT on Friday 14th May 15:28