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grayman
Administrator Moderator
2007/07/03 18:02:22
Road and Track

stroker cranks and street tuff engines

we now have an australian made stroker billet crankshafts available. with correct pistons and rods, up to 2.4 litres is avalable in 3S block, and almost 3 litres in 5S block. not for the faint-hearted or weak of wallet.

we keep a small selection of forged rods and pistons in stock, but obviously not the billet cranks, which are strictly made to order.

We are starting on building a couple more 'street-tuff" 3SGT's, using slightly modified stock cranks. Anyone interested in a upgraded or stock engine should contact us directly. Budget $5000-$6000 for a street-tuff unit, depending on final spec.
4 comments Leave a comment
MR2QIK
Good work Terry & Cindy! This is the first I've heard of these cranks (anywhere in the world). I'm yet to even see a "real" 2.4L 3S, so this good news to me. What are the rod ratios like on that 3.0L 5S block?? What piston/rod combo??
2007/07/03 22:12:46
Road and Track
the cost of the custom crank will in the $5,000-$5200 range depending on exact specs selected. rods & pistons to suit will range from $2200 to almost $3500, depending on brand and exact spec. Of course the rod ratios get worse, but thats a fact of life with mods like this.

Big capacity engines are built for torque, not high revs. Simplistically, power equals torque x revs. The ideal situation is you make more torque at the same revs. That is what a turbo does. if you want to rev it harder, destroke it, and make it rev. thats what we did with special (1800cc) S blocks in Corolla rally cars.

I can do either, stroke or destroke it. for the ultimate daily driver, my suggestion is a stroked 5S, with blower, preferably supercharged. i've yet to build one, but some desktop dyno modelling has some great predictions.

who wants to fund the prototype??. I'll do a great deal. Keep up the discussions
2007/08/03 09:53:28
RobYob
Hmmm think I'll buy a lotto ticket this week.
2.4 3SGTE AW11... [:u]
2007/09/03 10:48:47
RobYob
Like this?
http://e30m3performance.com/tech_articles/engine-tech/rod-ratio/index.htm
2007/09/03 14:17:36

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