OK, I'm still trying to figure out what I am going to do with my block. Does anyone know of a shop on the east coast that can bore it out and put in a chromoly sleeve?

You're in Tennessee right? That should be easy to find, maybe try looking in the yellow pages under automotive for a foreign car shop of some sort. I know Tennesse has alot more Porsche related shops than does Alabama. I'll ask a friend of mine in Tennessee tonight and post what I find out, he races and has a mechanic on his race team, the whole works, I'm sure he'll know someone. If you want I can tell of maybe two in North Alabama that could do it for you.(i.e., Huntsville)

That would be great, but the car and engine are in northern Va at my parents house. I would still be interested in anything you find out. Thanks

broadfoot down in fla does it.

Are you sure you want to sleeve that block? I'd have to open the old sleeve + proper treatment discussion, but the expansion rate of chromoly steel isn't even close to that of the silica/aluminum block.

If you want a native material bore job and treatment, Mancini Machine in Catonsville, MD (south Baltimore) did an excellent job on mine. Downside to the native finish is you're going to need a set of Mahle or KS oversized pistons at the tune of $1500+

Greg

From talking to SFR I, would like to use JE pistons in a 106mm bore.

Are you still considering the 968 crank (were you ever?)? Did you ever get in touch w/Garrity? He's only 500 miles away from Knoxville, and since you're in Nashville, then he would be about 150 miles closer- of course, you said the car is in Northern VA(?)- I'm not sure about that situation. There have to be some good tuners in the north eastern area other than Jon Milledge (unless you have the $$$ for him).

As for TN having lots of choices- I don't know about Alabama, but TN is definately hurting for Porsche engine builders...

Where would the 106mm pistons put you (displacement)? I'll have to get out my calculator...

Also, if the pistons Greg are talking about are $1500+, what does Garrtiy use for his engines? I'm not sure, but I know his rates are the most reasonable I've seen so far for the whole job. I'd just REALLY like to hear from a few people who have used sleeves in their 951's to see how they're holding up...

This is what I,m looking at. From Garity, $450 for decking and honeing to 100.25mm or 100.5mm and $1000 for pistons. From SFR $1475 for boreing to 106.00mm and installing chromoly sleeves and $850 for JE custom pistons. Any other options?

Ahhh, I see...

That's a lot more bore- I didn't know the #'s for the Turbo and/or what it would end up as off-hand...

anyway, Jon Milledge might do it, but I'm sure he gets a lot more for the job. also, what about Scott Gomes at Underpressure Performance?

How can I contact these people?

Scott Gomes

underpressure@mediaone.net

I just talked to a machine shop in Fairfax. He said he has done a lot of work on Porsches. He said he use to do most of the work for Autothority. I asked him about doing the 106.mm bore with sleeves. He said had done that twice and both times it did not work out. He said that there is an early modle block and a late modle block. He said that the earlier modles did not have the support around the cylender walls that the later modles had. He said that if the block was bored that large the thin walls would actual bend and move which leads to the head gasket blowing. Have you all heard of this before? If this is true, which block is my 88 951? He wants to sleeve it to the same size it is now and use stock size pistons. I would realy love to just ship my block off to SFR and have them take care of everything, but right now I'm not sure I have the money yet. Please help.

OK euro, if you want to play it safe dont sleeve and dont go over a 106. Find a shop that is close to home. Definalty not on the other side of the country. SFR does sound tempting but its just too far away and if somthing were to happen you would have no control. Garrity has my motor right now and so far everything has gone smooth. I had him bore to 104 and opted to go with his custom billet rods and pistons, lightweight flywheel, and head work. I would rate his customer service at a solid 10 and although I have only recieved my crankshaft to date, his work seems competant. I am also in VA (south east norfolk area) and it was really difficult to find a reputable machine shop that had experience with porsches. Also I believe the earlier blocks had the extra insulation which was for cooling purposes and the later blocks were not as beefy Ill look it up to be sure though.
Brian 86 951

Thanks, I Just found the name of the shop I talked to today. Kenson Automotive Machinest. So are you saying that 106mm will be ok? What made you choose 104mm?

Its each persons choice. But please know, I'm speaking from experience. I did my block and others. My block is an 86 block. Its 106mm bore. no stroke. 2.82 liter. Its been thru drag races, street races, dyno hauls, daily driving...never had and have not to this date expeienced a problem other than a blown water hose.

SFR only sells what we knows works. Ask anyone that has a product from us.

I don't know of any company out there that can claim an honest 415hp, 520tq at the wheels with a bore kit running (2.5 liter crank))with an MAF kit , that is still used as a daily driver. We reached those numbers using 18 psi boost!