Steel cranks & custom pistons?

Post Sat Aug 13, 2005 1:15 am

Does anybody know the specifics of steel cranks? I.e benifits/disadvantages?
Will they take any power that you can throw at them?
How much would a forged(?) steel crank cost to be custom made for a six cylinder? How about Con rods? Is there anything else that can be uprated in this area? Shells etc?

How good are normal pistons? How can these be uprated in terms of performance and reliability?

Any help greatfully apprieceated

Andy

Post Sat Aug 13, 2005 1:18 am

what do you want from your car and engine??anything is possible and w
how deep is your pocket!!

Post Sat Aug 13, 2005 1:20 am

Talk to me dude

:D:D

Do you have msn etc?

Andy

Post Sat Aug 13, 2005 2:13 am

aint got msn got e-mail or mobile!!
pm'd you my mobile so i'll be up late call if you want

Post Sat Aug 13, 2005 10:50 am

forged steel cranks will take whatever u can throw at them generally

What engine are they for helps?!

Post Sat Aug 13, 2005 4:58 pm

custom crank could be anything up to 5k depending on spec

steel cranks take pretty much anything you can throw at them

Post Sat Aug 13, 2005 6:03 pm

Are you planing to stay N/A or turbo ?

If N/A check the two stroker/bored kits from IE, very good value IMHO

http://www.bmw2002.com/

Click on E30 Performance then E30 Engine

Post Sat Aug 13, 2005 6:27 pm

$2,400 bucks is a lot of lolly, but when you are talking Ãƒ”šÃ‚£5k for a crank it's bloody good value. I think Andy is doing it to an S50 though... Andy.

Post Sat Aug 13, 2005 7:54 pm

$2400 is only bout Ãƒ”šÃ‚£1500 our money a bargain for what you get!

Post Sun Aug 14, 2005 12:12 am

Hi guys, as Dave says its for an S50B30.

Kos, I haven't got your Pm Mate

Andy, Not sure yet, but it needs a crank anyway, so looking into all my options

The engine is totally stripped so building it from the ground up so to speak

Hows yours doing mate?

Andy

Post Sun Aug 14, 2005 1:11 am

Have you got bad scoring on the crank bearing faces ?

Is it to far gone for it to be machined ?

Cranks are bloody enxpensive from BMW, i asked for a price for a crank for an E34 M5 3.8L. 1300 quid new and 800 for a recon plus they need your old one for exchange.Both prices are plus VAT but i think they include new bearings ?

Does the S50 all ready have a stronger crank than non-M engines ?

Mine is fine, i need to finish my adapter plate so i can get the TBs fitted and have it remapped.

The engine was mapped in my old E34 with a differant exhaust and air filter set up to what it has now in my E30 so i'm not sure its producing all the power it did in my old E34 but it does seem to run well.

Post Sun Aug 14, 2005 1:17 am

How many ponies do you recon once remapped and with the TB's on????

Post Sun Aug 14, 2005 9:27 pm

Widge wrote:How many ponies do you recon once remapped and with the TB's on????

Touch wood all being well circa 260-270bhp ????

The engine all ready has a Schrick 284/280 cam,head work and an Emerald ECU

Post Sun Aug 14, 2005 10:26 pm

And standard the 3.5 is 220bhp, so that is a damn good increase.

Post Mon Aug 15, 2005 8:12 am

s50b30 is good for 9k+ on the standard bottom end apparently, no need for a different crank!!

Post Mon Aug 15, 2005 1:21 pm

did you ever get my pm, try e-mail
kos_bm@yahoo.co.uk

Post Mon Aug 15, 2005 8:25 pm

Kos wrote:did you ever get my pm, try e-mail
kos_bm@yahoo.co.uk

Who do you mean mate ?

Post Mon Aug 15, 2005 10:14 pm

Hi mate, never got the PM, sent you an e-mail

Andy

Post Mon Aug 15, 2005 10:43 pm

Andy325i wrote:Hi mate, never got the PM, sent you an e-mail

Andy

Oops, guess i should have read the thread properly