Messages

1

Swaps, Turbos, Buildups / Re: M42 stroker build begins

« on: April 09, 2015, 02:00:03 AM »

Thank you!

2

Swaps, Turbos, Buildups / Re: M42 stroker build begins

« on: April 04, 2015, 03:08:03 PM »

Compression Height of Stock S50 Piston is 32.8mm with Honda 1.8L VTEC B18C (GSR) 138mm rod

Excuse me, maybe it's a stupid question... If you use honda rods, do you use honda bearings?

3

Swaps, Turbos, Buildups / Re: M42 build for E36 Compact

« on: January 05, 2015, 04:51:25 AM »

[/quote]
Careful crankshaft stroke is the diameter not the radius so
Going from m42 crankshaft 81mm to m47d20 88 mm only increases the piston height by 3.5 mm using the same conrods.
Cheers Rohan
[/quote]

Yes, I agree with you.
Today I will disassemble a m42 engine I bought, so I can try all the combination!!!

4

Swaps, Turbos, Buildups / Re: M42 build for E36 Compact

« on: December 22, 2014, 10:40:48 AM »

Crankshaft + Bearings from Diesel: 88mm Hub (16.6kg) Stock 13.2kg
Eagle Forget Conrods: 135mm (22mm pin, 540g) Stock 532g
Wiseco/Mahle Forget Pistons: 86mm (22mm pin, 320g) Stock 446g
Headgasket M44: 1.74mm

=> CR = 13.06:1 /1.85mm over deck/
     Discplace: 2044.7cc = 8.6x8.6x8.8x3.14159  (511.17cc per Cyl)

88mm hub + EVO Piston + 140mm M44 Rod = 6.85mm over Deck
88mm hub + EVO Piston + 135mm Eagle Rod = 1.85mm over Deck

So, I think I have to use rods of 135mm lenght...

5

Member Profiles / Re: Pelly82

« on: December 22, 2014, 08:58:10 AM »

Ciao!
Gears are some from other zf gearbox, some are custom made.
A friend of mine is a genius and studied about these gearboxes: http://www.gr-box.sm/
Top speed is about 170/180 km/h with 5th gear.

6

Swaps, Turbos, Buildups / Re: M42 build for E36 Compact

« on: December 20, 2014, 10:43:06 AM »

Hello Adam, I am interested in the same thing... I was thinking at 88mm crankshaft, 135mm rods (like these: http://www.ebay.it/itm/CXRacing-BMW-M20-H-Beam-Connecting-Rods-135mm-Rod-Length-/180820595258?pt=Motors_Car_Truck_Parts_Accessories&hash=item2a19bf523a), and good S50B32 pistons like wossner... Maybe all will fit without extreme modifications... I read in other topics that we can use honda (engine B18C) rods, 138mm lenght, but you must work on pistons...

7

Member Profiles / Re: Pelly82

« on: December 20, 2014, 07:40:48 AM »

Tha crankshaft I have is like this: http://www.m42club.com/forum/index.php?topic=7765.0

ZF gearbox is 5 gears + reverse. Ratio is 2,7 - 1,76 - 1,39 - 1,175 - 1. With 4.44 diff is funny!!!

8

Member Profiles / Pelly82

« on: December 19, 2014, 09:05:41 AM »

Hello to all, my name is Matteo and I am from Republic of San Marino.
I have a 318is E30 rally car built this year with:
Extremetech suspension, close ratio steering, differential LSD 4.44, ZF close ratio gearbox.
Now I bought an M47 crankshaft for a good engine build up.
Thank for all advice!!!