2.0 Piston and Cylinders...advice needed

[1red66911]

New paint-new interior-new tires-rebuilt Weber's. Ready to Roar! Actually No. My '66 has been diagnosed with Low Compression Syndrome. 60 lbs all around with one at 90. Valves are adjusted correctly. The car came with original Solex 40-P1, so figure Solex cams. There are to many options for me to describe. Money is a concern here, so is originality and I want to do this correctly from the get go. I could go to 2.2 easily enough. Might even be less expensive.

So, I am looking to buy a set of pistons and cylinders suitable for my trusted friend who I call #303636.
Seeking advise. Dan

[1red66911]

http://www.ebay.com/itm/PORSCHE-81-M...KS3WiA&vxp=mtr

[preS]

make sure you check your valve spring tension. It's different for this high compression piston than a 130 HP piston.

Richard

[NeunElf]

http://www.ebay.com/itm/PORSCHE-81-M...KS3WiA&vxp=mtr

JE makes excellent pistons, but...

The "906" thing may be a concern. The eBay listing says "9.5 to or 11 to 1" compression ratio. A stock 901/01 engine would have had a 9.0:1 compression ratio. The 901/02 (911S) engine had much greater valve duration making its 9.8:1 compression ratio usable with the available gas. I think the 906 valve duration and [static] compression ratio were even greater.

Maybe you can put enough shims under the pistons to tame the compression ratio; that's a question for folks more used to building engines than I. I think Mahle reintroduced some near-stock pistons for the 901/01 (and 2 liter 911E) engines not long ago. At this writing I'm not sure of a source.

The term "Solex cam" also applies to the Weber-carbureted 901/05 engine used through the end of the 1966 model year and in some of the 901/06 engines early in the '67 model year. The center-lubricated version was used through roughly the end of the '65 model year.

[66S]

Wossner makes a piston for your motor in oversize, look on ebay, an Italian seller has a decent price.

[edmayo]

I've done several using .040" overbore J E pistons in your rebored original cylinders. This is a very cost effective method which works well and the over bore gives a slight power increase.

[304065]

Been there. . . check this thread out: http://forums.pelicanparts.com/911-e...-901-05-a.html

[NeunElf]

Wössner also has a site in Huntington Beach, CA (http://www.wossnerpistons.com/, 714.369.8547, autotech@wossnerpistons.com) if you don't want to work through eBay.

You could also contact the Racer's Edge (http://racersedge-inc.com/ 865-862-5262, info@racersedge-inc.com) a Porsche specialist which handles Wössner pistons.

If the pistons from eBay have too much compression maybe JE could machine them for you. I had trouble finding proper "Super" pistons for my 356A--I talked to JE and found I could get any pistons I wanted as long as I designed them. I wound up getting JE pistons through LN Engineering.

[edmayo]

He did mention most "cost effective". Let the "slippery slope" begin.

[1red66911]

Thanks for all the feedback. I am not an engine guy. I spoke to Henery at SuperTec and confessed my ignorance. My order has be put on hold. My mechanic says I need new pistons and cylinders. This is a week end drive car, I am not going to race it and I don't need big horse power. What set up is a cost effective solution? Dan