2.5 shor stroke engine, my plans |
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2.5 shor stroke engine, my plans |
michel richard |
Dec 20 2005, 07:21 PM
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#1
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Senior Member Group: Members Posts: 1,291 Joined: 22-July 03 From: Longueuil, Québec Member No.: 936 |
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 |
michel richard |
Dec 21 2005, 04:16 PM
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#2
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Senior Member Group: Members Posts: 1,291 Joined: 22-July 03 From: Longueuil, Québec Member No.: 936 |
Mark,
Because I have the carbs, I would like start with those. Does the SDS take care of the ignition too (i.e. is it an engine management system) or just the injection ? Inviting you to come over and set it up in the spring is not impossible. Or me drving it down to your shop on the carbs. That is all several months away, though. (note to California guys: we got a foot and half of snow last week) Can you point me to a good web page with details on the system ? I already a pair of WB sensors, with the Innovate hardware. Oh, and please remember I'm doing a twin plug system, you were talking about single plug prices in your next-to-last post. Michel |
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