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> Building another engine
mepstein
post Feb 27 2026, 10:55 AM
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Building another engine for future sale. This one is a 3.2 short stroke. Pauter cranks, canyon head studs, JE 10.5 pistons in Mahle 98mm cylinders. 964 oil pump. Cam for EFI. Twin plug heads with asco valve springs and retainers.

More to come.


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Root_Werks
post Feb 27 2026, 02:55 PM
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Love to see engines getting built like this. Works of art!

Short stroke 3.2, would it wind up being less than a 3.2?
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mepstein
post Feb 27 2026, 03:56 PM
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QUOTE(Root_Werks @ Feb 27 2026, 03:55 PM) *

Love to see engines getting built like this. Works of art!

Short stroke 3.2, would it wind up being less than a 3.2?

It’s built on a 3.0 case with 98mm pistons and cylinders. Same cylinder as a 3.2 to 3.4 but the piston needs to be sized for a 3.0 rod. It’s a tried and true combo.
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mlindner
post Mar 1 2026, 05:54 AM
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Very nice Mark. Post more of the build, fun to see it come together.
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mepstein
post Mar 1 2026, 07:39 PM
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Cleaning up the cam towers. Removed all the studs to replace with new. It also makes it much easier to clean the sealing surfaces. Removed the aluminum plugs and oil spray bars to install new. This greatly reduces the chance of debris obstructing oil flow. These parts are 45 years old…. A couple times in the ultrasonic and then blow everything off with compressed air.


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jim_hoyland
post Mar 1 2026, 08:20 PM
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(IMG:style_emoticons/default/smile.gif) Interesting, keep posting..
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mepstein
post Mar 5 2026, 02:44 PM
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Mahle cylinders and custom JE pistons that have been undercrowned and coated.


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Steve
post Mar 5 2026, 04:04 PM
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Very nice!! What is the plans for cams and induction? Also always curious about cost?
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infraredcalvin
post Mar 5 2026, 05:31 PM
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Ooooh, please lots of pics and details! Those JE’s look very similar in profile and piston cut to the Mahles that just went into my burnt 3.4.

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What cylinders are those/where’d you source? I have some older Mahle motorsport 98mm single plug pistons i was thinking of doing a 3.2SS… but i need to source the cylinders or have the 3.0 cylinders bored and coated???
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mepstein
post Mar 5 2026, 06:49 PM
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QUOTE(Steve @ Mar 5 2026, 05:04 PM) *

Very nice!! What is the plans for cams and induction? Also always curious about cost?

Cams are special. Streetable but very performance oriented. Induction will be Clewett ITB’s and Haltech efi. Cost is a core engine, parts and labor. The efi & itb’s add a significant cost over stock induction but really make it fun.

A note about EFI. There’s a cost for parts but you can expect to pretty much double the cost to actually get it running and tuned. We’ll have a custom harness made, engine installed in the car and dyno tuned.

I’ll post the engine to completion and then show it in the car if the buyer is ok with it.
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mepstein
post Mar 5 2026, 06:55 PM
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Hard to tell from the pics but the pistons are undercut to save a bit of weight. Pauter rods are lighter and stronger than stock. It all adds up, or in this case, adds up to less weight.


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flyer86d
post Mar 6 2026, 05:10 AM
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I had a very similar motor in my track 911 way back when but with Weber 46’s and GE80 cams. It was a wonderful revvy engine that would light off the tires in first when it came up on its cams at 5000rpm, rev to 7500 and was very reliable. I never had it out of the car in the eight years I owned it. This will be a fun motor!

Charlie
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930cabman
post Mar 8 2026, 03:05 PM
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Gonna be a rocket, keep posting as you go
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mepstein
post Mar 8 2026, 03:11 PM
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Slowed down a bit while we finish a stock-ish 2.4 for a customer and work on some other stuff.
Also building an IROC car.


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