Custom Crank for more revs

Next question is for a high revving engine what are the best Big End Bearings.

I've been looking at Calico ones but, got some info the other day for the Best ones to use.

http://www.intengineering.com/4-Cylinder-VW-Calico-p7346368-1-2.html



I have Original VW ones in mine , but a friend is rebuilding his engine.

 

I will try to find out the answer to that. Germany was the source IIRC.

 

Also for a high revving Crank i fitted ARP Main Cap Studs .

 

FWIW, mine has neither those or head studs.

(FWIW ).

 

Translate please

For What Its Worth

But you only rev yours to 4k

Only Joking

 

Diesel []

It's the Passat I'm talking about

 

For what it was going to cost for VW Head & Main studs, thats why i went for the ARP similar price.

 

Fair do's indeed.

 

I decided to raise my rev limit to 8500 max with hydraulic tappets? with the standard 86.4mm stroke crank.How about main cap's bolts? can i use the stock ones?

cheers

 

edited

 

Are you going to be using uprated conrod bolts/forged pistons in it?

 

Yep i'm using forged rods and pistons with arp conrod bolts

 

.

 

So just out of interest, is the standard rev limit the upper rev limit for standard parts?

 

Is that with regard to strength or wear? I am really guessing here, but. I recon. the rev. limit propably allows for long life as well as strength capability.

If you look at the fact alone, that some VAG engines have cast cranks, and some forged, in what are basically the same engine, with basically the same rev. limit. Then you would expect the forged crank to accept higher revs. before failure throught strength alone.

'Blueprinting' an engine, uses standard parts and produces more power and allows higher revs.

 

nop.. So how about the main cap bolts?

 

I wasn't thinking in that much detail, more of how high you could go on a standard engine before dents start appearing in the bonnet!

Would it be worthwhile putting together a list of various components' rpm/power limits? Based on people's experiences, it could be useful for folks putting engines together.. just a thought

 

that would be helpfull