There are some very knowledgable people on here that should be able to offer advice on all aspects
What is the most BHP.....
Moderator: martauto
Without all the info it's just opinions and speculation. Like pi55ing in the wind really
There are some very knowledgable people on here that should be able to offer advice on all aspects
There are some very knowledgable people on here that should be able to offer advice on all aspects
TTRS regs stipulate std head, std block. Crank is free but must be std stroke. Pretty much anything else is free (within the constraints of the original architecture) so big valves, lumpy cam, ITB's etc. all OK.
The big difficulty which I can see with running a 2.7 is that, registered as a 325e, you HAVE to use the ETA head, which as I understand it, doesn't flow too well. Or do the series scrutineers allow the std 325 head to be substituted - a bit 'grey' if they do!
We're prepping a 325 for the same series which has all the bits fitted and produced 203 WHEEL HP (estimate 250 at the crank) on triple 45's when tested for the Kumhos.
When it reappears later this summer, it will have ITB's, stand alone management, and a lumpier cam. Hoping for 250+ but we'll see.
Kim
The big difficulty which I can see with running a 2.7 is that, registered as a 325e, you HAVE to use the ETA head, which as I understand it, doesn't flow too well. Or do the series scrutineers allow the std 325 head to be substituted - a bit 'grey' if they do!
We're prepping a 325 for the same series which has all the bits fitted and produced 203 WHEEL HP (estimate 250 at the crank) on triple 45's when tested for the Kumhos.
When it reappears later this summer, it will have ITB's, stand alone management, and a lumpier cam. Hoping for 250+ but we'll see.
Kim
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Simon13
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i honestly don't think you'll get a NA 2.7 to live with these S14's
the poor old 2v donk just can't cut the mustard with them.
You'll want a 288 style cam, some billet rockers, trick rods with ARP bolts, itbs and i know eta cranks aren't that bad but if you ran this lot the engine to could run at well over stock revs where the eta crank could fail. With a td crank you wouldn't have this worry. You'd want some custom pistons to run a higher compression ratio and also this would allow 135mm rods or a touch longer if you wanted.
I personnally think the 135mm rods in a 2.7 make all the difference imo on the road but i've never raced M20's
the poor old 2v donk just can't cut the mustard with them.
You'll want a 288 style cam, some billet rockers, trick rods with ARP bolts, itbs and i know eta cranks aren't that bad but if you ran this lot the engine to could run at well over stock revs where the eta crank could fail. With a td crank you wouldn't have this worry. You'd want some custom pistons to run a higher compression ratio and also this would allow 135mm rods or a touch longer if you wanted.
I personnally think the 135mm rods in a 2.7 make all the difference imo on the road but i've never raced M20's