H beam con rods and rev limit - Alfa Romeo Forum
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H beam con rods and rev limit

Evening knowledgeable folk.
I've done a search, but couldn't find anything. I'm wanting to fit the Alfa lump in a kit car, but I'd like to try and tune the engine to turn a few more revs, as my current toy revs out at 11,000 rpm. With most engines I know about, the con rods and rod bolts are the first thing to change to up the rev limit a bit. However, are they worth it on the 2.5 V6? If not, what is worth it to allow the engine to rev higher? It will already have a better flowing exhaust and inlet set up due to the way it'll fit in the car, should that make much difference.
Cheers all.

“Let your plans be dark and as impenetrable as night, and when you move, fall like a thunderbolt.”
Sun Tzu- The Art of War
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Re: H beam con rods and rev limit

There are many things you can do to make higher than std revs safer (all of them very expensive), but you will never see 11000rpm safely with the old V6.
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(Post Link) post #3 of 7 Old 12-11-08 Thread Starter
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Re: H beam con rods and rev limit

Sorry, should've said, I'm not after 11k!! Just a bit higher than normal is all I'm looking for.
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Re: H beam con rods and rev limit

forged rods/pistons.
bottom end rebuild,
expensive balancing session,
completely remanufactured triple timing belt drive system,
solid lifters, stronger valve springs?

Just a quick one, why not use a 3 litre engine? specific series regulation? If not its a waist of time starting with the 2.5
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Re: H beam con rods and rev limit

forged rods/pistons.
bottom end rebuild,
expensive balancing session,
completely remanufactured triple timing belt drive system,
solid/henning followers, stronger valve springs?

Just a quick one, why not use a 3 litre engine? specific series regulation? If not its a waist of time starting with the 2.5
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Re: H beam con rods and rev limit

It's mainly because it's what I have. It also allows me more of an upgrade path, as I love tinkering with my cars. This way I can start with the 2.5, play with it a bit, maybe supercharge it, then move up to the 3.0 and 3.2 V6s over time. I know this will be more expensive, but if all goes well, the car will be the most powerful thing I've ever owned, so I think it would be wise to build things up slowly. Going straight for an 800kg car with a 350-400bhp blown 3.2 would not be my wisest ever move!

Oh, when you say about the triple belt timing set up, can you point me in the direction of such a set up?
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Re: H beam con rods and rev limit

I have pics of one but they are locked in my other pc. Alfaspence will be able to direct you to the chaps website and piccies.
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