Mahle s2k pistons
05-20-2010, 06:07 PM
#11
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If you cant find a competent machine shop, you can hone the block yourself. I bought an Sunnen An-112 hone and honed mine when I rebuilt it. My catch can never sees any oil, so I guess it worked good pretty good, and yes my car is my DD. Here is the list of stuff needed to do it, right off of sunnens catalog.
Tools Required for High-Silicon Aluminum Alloy
Such as Porsche, Mercedes, Honda and Vega.
Tooling Required When Honing High
Silicon Aluminum Blocks
• AN-111, AN-112 or AN-815 Cylinder Hone
• AN-80 Quick Coupler
• AN-1060 Heavy Duty Drill Motor
• UN-60 Universal Honing Stand
• MM33-J63 Roughing Stone Set
• MM33-J85 Finishing Stone Set
• MM33-CO5 Polishing Stone Set
• MM33-FO5 Felt Set
• AN-30 Sunnen Silicon Compound
• AN-35 Storage Box
• GA-2125 or GR-2125 Dial Bore Gage
• MAN-845 Honing Oil
It can get a little spendy to buy all this stuff, but you dont actually need all of it. I actually skipped the mm33=f05 felt honing step, since the Honda manual does not call for it and It was hard to find.
Also I think the honda manual hone procedure is inferior to the sunnen hone procedure, but I guess honda saw sufficent results using only 3 of the 4 steps.
As for the procedure check the linked article below, however when they talk about the Xm27 honing stones, they were never actually released for sale. And I think you can subsitute the MM33-f05 felt and An-30 silicon compound for this step.
The article has some excellent information on why cast iron sleeves are inferior to pure aluminum blocks.
http://www.mmsonline.com/articles/new-honi...-cylinder-bores
Tools Required for High-Silicon Aluminum Alloy
Such as Porsche, Mercedes, Honda and Vega.
Tooling Required When Honing High
Silicon Aluminum Blocks
• AN-111, AN-112 or AN-815 Cylinder Hone
• AN-80 Quick Coupler
• AN-1060 Heavy Duty Drill Motor
• UN-60 Universal Honing Stand
• MM33-J63 Roughing Stone Set
• MM33-J85 Finishing Stone Set
• MM33-CO5 Polishing Stone Set
• MM33-FO5 Felt Set
• AN-30 Sunnen Silicon Compound
• AN-35 Storage Box
• GA-2125 or GR-2125 Dial Bore Gage
• MAN-845 Honing Oil
It can get a little spendy to buy all this stuff, but you dont actually need all of it. I actually skipped the mm33=f05 felt honing step, since the Honda manual does not call for it and It was hard to find.
Also I think the honda manual hone procedure is inferior to the sunnen hone procedure, but I guess honda saw sufficent results using only 3 of the 4 steps.
As for the procedure check the linked article below, however when they talk about the Xm27 honing stones, they were never actually released for sale. And I think you can subsitute the MM33-f05 felt and An-30 silicon compound for this step.
The article has some excellent information on why cast iron sleeves are inferior to pure aluminum blocks.
http://www.mmsonline.com/articles/new-honi...-cylinder-bores
05-20-2010, 06:39 PM
#12
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Originally Posted by Chris@SoS,May 20 2010, 12:36 PM
hi guys --
We have the Mahle pistons available (we have part no. S2K181425P07 already on order, eta is May 31). We also can hone the blocks to the 87.25 bore if needed.
The 87.0mm set is meant to be used in a brand new block, or a block that does not have scratches, is not ovalized, and still has a suitable cross hatch left.
If you have any questions, please let us know.
regards,
-- Chris
We have the Mahle pistons available (we have part no. S2K181425P07 already on order, eta is May 31). We also can hone the blocks to the 87.25 bore if needed.
The 87.0mm set is meant to be used in a brand new block, or a block that does not have scratches, is not ovalized, and still has a suitable cross hatch left.
If you have any questions, please let us know.
regards,
-- Chris
05-20-2010, 07:50 PM
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Location: Kernersville NC
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Originally Posted by wadzii,May 20 2010, 09:30 AM
if the cylinder walls arent messed up there really is no need to do anything. I have built quite a few h22's with stock bores with out issue.
I am working with my local machine shop to get all this figured out. They are working on getting the stones needed for this.
I am working with my local machine shop to get all this figured out. They are working on getting the stones needed for this.
05-21-2010, 12:08 PM
#17
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Originally Posted by RealStreet,May 21 2010, 07:58 PM
I'm glad Mahle finally made these.
I sent them all my stock ap1 and ap2 stuff (pretty much a whole motor) back in February. Its been a long time coming for sure
