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

[Trekkor]

Let me drop this little "bomb" (IMG:http://www.914world.com/bbs2/html/emoticons/cool.gif)

When I had an understanding of "how to" sync my triple Webers, it was less than an hour. Haven't touched the settings since last January.

Sure, jet cleaning, air cleaner washes...

I was just telling somebody a couple of days ago how simple it is. You could turn in all the idles and air corrections on my carbs and I would have it back to where it is now in 15 minutes, I promise you that.

If and when I ever take the car to a dyno, *maybe* there are gains to be made.

Carbs are not evil. Sure they rough start when cold, but I hope none you go romp on your motors when they're cold. (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif)

7300 rpm revving 2.0 SIX on carbs...Out.


KT