2.5 shor stroke engine, my plans Options

[michel richard]

So here's what I'm doing for the engine as part of my "GT style" conversion. First and foremost, I figure that an engine in a GT style car has to be rev-happy.

So, here's what I'm putting together, with the help of my trusty wrench, Ron Green of Campbell Gararge in Montreal:

Short stoke 2.5 Porsche engine:

1) Used 7R engine case, align bored, Timeserted, shuffle pinned
2) 90 mm JE pistons, 10.5 compression ratio
3) 90 mm replated Nickasil cylinders, sourced from EBS
4) Standard piston ring set
5) 66 mm counterweighted crankshaft
6) GE 80 camshafts
7) EBS racing valve springs
8) EBS valve spring retainer set for above
9) 2.0 connecting rods
10) ARP rod bolts and nuts for above
11) twin plugged heads
12) Electromotive HPV twin ignition
13) Turbo lower valve covers
14) front mounted ol cooler with "GT Style" installation
15) new bearings and gaskets all around
16) miscelaneous engine parts, stock.

I still need to figure out what to do with the port sizes in the head. The target is to have a 8,000 rpm redline, and 250 hp, although the redline is more important than the hp to me.

So that's the plan. I pulled the trigger on the hard parts above today. ( I already have the crank and the miscelaneous parts).

Induction is going to be 40 mm PMO carbs, jetting to be determined.

I'll post to this thread as progress is mad on the engine.

Michel Richard

[Mark Henry]

I'd have to check it out...but I know a guy who bought a twin plug system 3 years ago and it was about $1700 US...so a single plug system must still be under 2k canadian.

PM me if your interested and I'll find out.

QUOTE

The problem with fuel injection systems is that they sound good on paper and in theory, but they're a lot harder to get support for and lot harder set up. I agree that once dialed-in they'd be much easier to run.

Both SDS and I will support you 100%.

The SDS will come loaded with the base program to your spec and injectors. I have 911 maps on file.

I could lend you my WB.

No Carbs needed for break in.

If your builder doesn't know squat about PEFI I'll talk him through it.

Hell... give me a bit of gas money and a place for the family to stay for the weekend and I'll come up and help you break it in. (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif)

As long as the car is "on the road" I can have it "dialed in" in one day.

SDS is simple.