Author Topic: Pictures af my project (Read 17818 times)

Lund8200 · « **on:** July 05, 2007, 04:33:43 PM »

Heres a link to a Danish forum where I have postet some pictures of my stroker project. Sorry that its all written i Danish, but do you have any questions feel free to write in here.
The short story is a M47 crankshaft and modified pistons from a Peugeot 406.

http://www.bmwe34.dk/forum/viewtopic.php?t=40464

nickmpower · « **Reply #1 on:** July 05, 2007, 05:52:16 PM »

holy shit. Is that like 13:1 compression?

ose30 · « **Reply #2 on:** July 06, 2007, 12:52:01 AM »

Quote

holy shit. Is that like 13:1 compression?

I suppose compression is not that high

he wrote on his web site:

Quote

Kompressionsforhold bliver udm�lt. Vil holde motoren p� standard 10:1.

Danish is rather easy to read if you know a little Swedish....

Word "stempler", does that mean lifter ? So, are you using Peugeot valve lifters? Was it difficult to locate M47 crank in Denmark. It seems to be rather difficult here in Finland.

Lund8200 · « **Reply #3 on:** July 06, 2007, 02:43:01 AM »

Pistons are be modified so that stock compression are kept.

"Stempler" are Danish for Pistons.
For valvelifters I am using the 49 grams VW lifters.
It was not a big problem to find a used crank in Denmark, called Brdr. Sch�ber and they had one lying. Price was 3000 DDK = approx. 535 $.
http://www.genbrug-bmw.dk/

Tor Arne Kaasen · « **Reply #4 on:** July 06, 2007, 02:57:58 AM »

Hi lund8200. i am olsow bilding a stroker, but with a turbo charger to.
i bougt the m47 crank from koed.dk. What piston are you using? and what rods? length?

Lund8200 · « **Reply #5 on:** July 06, 2007, 05:31:52 AM »

The pistons are from a Peugoet 406 �year 95-, 2 litre 16 valve.
Engine code is XU 10 J 4 RZ and Mahle number is 039 65 00.
Be aware of that these piston is not a Plug�n�play solution, they need modification to accept the pistonpin because they are build to work with presspin instead of circlips as on BMW.
Also valvepocket needs to be checked and freeplay for the rod.

Rods are from a BMW 1.8 M40 center to center length 135 mm instead of the M42 140 mm. I belive some M20/M50 engines use to same rodlength.

With this setup you almost have the same deckheight as stock M42, futhermore I have made a deeper "dish" to compensate for the increased volume that is being compressed in the combustion chamber. Without these "dishpocket" I would have ended up with a compression rate of approx. 11,5:1. See picture 5 (stock) versus picture 9 (after modification).

romkasponka · « **Reply #6 on:** July 06, 2007, 05:45:07 AM »

Why so low compresion ratio was selected?

Lund8200 · « **Reply #7 on:** July 06, 2007, 09:21:52 AM »

To avoid pinging.
10:1 is what BMW has designed this engine to run and I will keep it that way, sure it will cost some HP, but gas with a higher octane number than 95 is hard to get here.
Later perhaps I will shave some more of the head to raise the ratio, but for a start my guess is this.
The engine will have knocksensors from a E36, if I find a way to integrate it in the wiring.
Need a complete wiring diagram for both the E30 and the E36 first.

Also I have planned to exchange the stock injectors with some from a M52 328i, Bosch number 0-280-150-440, but these use 14 ohms resistance instead for my old ones that are 16 ohms. Anyone that can confirm this?
A would it be a problem using these injectors instead?

Boyracer · « **Reply #8 on:** July 06, 2007, 01:40:46 PM »

Hi there Lund!

Where did you get the VW lifters and how much did they cost? I need set of them too!

Tor Arne Kaasen · « **Reply #9 on:** July 07, 2007, 10:33:12 AM »

i olsow got the 135 mm rods but from M50B20

ose30 · « **Reply #10 on:** July 10, 2007, 03:27:10 PM »

Quote

but these use 14 ohms resistance instead for my old ones that are 16 ohms. Anyone that can confirm this?
A would it be a problem using these injectors instead?

with correct resistors that won't be a problem.

cecotto · « **Reply #11 on:** July 10, 2007, 06:17:46 PM »

Quote from: Tor Arne Kaasen;29207

i olsow got the 135 mm rods but from M50B20

For refrence..

Only the non vanos model has 135mm rods (Up until and including 8/1992) Here after it's 145mm.

Lund8200 · « **Reply #12 on:** September 20, 2007, 10:08:32 AM »

Lastest update - The engine is now almost ready to be swapped.

Alexx · « **Reply #13 on:** September 27, 2007, 04:17:01 PM »

Sweet.

tjts1 · « **Reply #14 on:** September 27, 2007, 06:45:46 PM »

Lund
Is the M47 crank a direct drop in or do you have to make any modifications to make it fit in the M42?
Thanks