Malhe cilinders and wiseco pistons

[cedric]

I have 94 mahle cilinders an wiseco pistons.i heard before you can  Use    Them that they need to have a special cross pattert is that threu or not can i use it like that
Greets cedric

[dangerous]

You must first check that the clearance is enough.
Inside the box of pistons, will be some specifications for the piston to bore clearance.
That combination of parts is normally tighter than they (Wiseco) recommend.
To meet the recommendation, you may need to hone the cylinders with the correct pattern and surface finish.

[cedric]

Oke thanks will check that

[DWL_Puavo]

I've used successfully both Mahle and AA barrels (94mm) with Wiseco pistons. Piston rings have to be grinded and in wiseco box there was quite a noticeable red warning paper that tells about this.

With the barrels I have had, there was no problem with clearances, however I didn't check the honing pattern at all as my wiseco's didnt come with instructions about the honing and surface pattern. Now that I've read about it, I'll have to check the pattern in the coming winter. Maybe the best thing about 94mm barrels is that they can be puchased new for about 15-20euros/pcs, so the longevity of them is not that important in my application.

Puavo

[pupjoint]

sorry to hijack this thread, but anyone tried the JPM Billet cylinders yet?

i sent in an inquiry asking about pricing and details, waiting reply now.  planning to use the super squish pistons from ACN.

planning to use these for my upcoming 2332cc build, CB aluminium case, MS230 heads, narrowing down on the pistons/cylinders and rod length now.

[Old Guy]

Mahle Brazil cylinders are now made in China and I don't think there is any difference between the AAs and Mahles.  Both are honed in a crosshatch pattern.  As suggested by DWL_Puavo it is imperative to check the skirt to wall clearance and the end gap on the rings.  We use the AA cylinders and Wiseco pistons in one of our Pro-Gas motors and run .0045" skirt to wall clearance.  Ours is strictly a drag car so I think between .0035" and .0045" would be fine for a street/drag engine.

[spoolin70]

Hi pupjoint, did you get a reply from JPM ? I'm thinking for some in 4".

Apologies for the thread diversion.

Thanks
Darren

[pupjoint]

u have pm