80mm Pistons and cylinders

[Ted2]

Who has a better 80mm P&C product - AA or Wolfsburg West?

[TomSimon]

Both are likely from the same source, AA, but it's worth asking Either Kona or the counter guys at WW
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2-time NASA Pro Racing Champion, Bonneville 130 Club and 150 Club Memeber, BRS Pro Gas racer

[sled]

The WolfsburgWest cylinders are from Mahle, and the pistons are forged 4032 alloy.

I assume the AA cylinders are Chinese, and the pistons are hypereutectic (cast).
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drive your split.

[motofly196]

Yes, the AA are Chinese. I am almost finished up with a 1397cc Okrasa now. The AA pistons and cylinders are of the same quality as their other products. I haven't found anything wrong with them. Buy the AA's, spend the money you just saved on other things in my opinion. You'll have lots of "Other" places to spend it on a 36hp. I could of built (2) big 2 liter engines by now.

[sled]

[Jacks]

I’ve had good results with AA rings that are supplied in their 86mm 356 kit, but I have not used any of their VW kits. Now, QSC 86mm 356 rings are absolute junk. I put together 3 engines with QSC, and not one of them seated the rings after 600 miles. When I asked them about the rings, they told me they were genuine Grant. They are not. All 3 of the aforementioned engines required ring replacement.
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Jack Staggs
Actual name

[PEPPE]

what about the 3/3/5mm rings for 80mm that sells AA? are them for cast iron or usable also for original porsche alu/chrome cylinders?

i'm building a pair of 80x74 36hp (one x76), using preA parts but discovered that AA 80mm, porsche version, are shorter than porsche ones in head side. the part with no fins is too much short. the 80mm version for 36hp is better, but has a different diameter so it cant be used on heads already modified. Why they used a different diameter? porsche size is definetely better.

[Jacks]

The rule is do not use chrome rings on chrome cylinders
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Jack Staggs
Actual name

[motofly196]

Good to know you've also had positive experiences with the AA rings Jacks! The 80mm AA rings looked exactly like the ones that come on the 85.5, 92, and 94mm Piston that I've used from them. Hope these 80mm are good too!

[John E]

I just bought a AA piston cylinder set that should be here next week. Does any one have a bore dimensions for the case and heads? Is there a rule of thumb for clearance for the cylinder to case or head ? Would not mind doing the prep work this weekend.

[PEPPE]

80mm for porsche 356 is 88mm, 80mm for 36hp is 87mm, really don't know why they used different size since 88mm is better

[vintage fiberglass]

I want someone to build me a short block using a 1950 aluminum engine case and install a 74mm crank (new or rebuilt, Porsche or aftermarket?), with rods and the new big bore 80mm wolfsburg kit. The block will need clearance and I need someone who knows that they are doing??

anyone out there? The beginning of a 1500cc denzel engine build. Tim

[[email protected]]

[Busted-bolt]

Is it true that the pin hight in the 36 hp piston is the same for the forty hp? If so I would like to buy some of those dome top 80's to finish of my first generation bastard engine project. My goal is to use O/G cylinders that fit the smaller openings of the first generation bastard heads [the ones with the plates].
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I do all my own work,body,engine and transmission.

[Kjell Roar]

[volkswouter]

[gimmesomeshelter]

"I want someone to build me a short block using a 1950 aluminum engine case..."

Which cam do you plan on using?

Cheers,

Paul
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"I would rather have questions that can't be answered than answers that can't be questioned."

Richard Feynman

[volkswouter]

[Bub]

[Bub]

I figured I'd update this for anyone building/ rebuilding w/ big bore on a 36hp block.

For the 83mm 40hp big bore kit:
~86mm at the case
~89.5mm at the head

AA 80mm 36hp big bore kit:
~85.2 at the case
~86.7 at the head

WW 81mm big bore:
~85.8 at the case
~86.8 at the head

I'm going to see how sloppy the AA kit is in my heads that are already opened up. Could be too loose...if so I have another pair of heads getting some work done I can use. Or maybe I'll come up with an idiot idea how to cram the cylinders on safely.
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