Quote:
Originally Posted by euro911sc
Tom: he needs your straight edge width or did you take that out of the measurement already?
Lars: Why machine the chain boxes instead of space out the cylinders with a thicker copper gasket? Seems spacing it out avoids a host of other problems...
Also, Are there not drawbacks using a straight 2.2 pump on this 3.0?
Henry: You have built a few of these 3.0 MFI wonders. How did you set up the pump and what would be the best pump to start with as a core ro does it matter at all?
Best regards,
Michael
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Tom- Thanks for the measurement. Mine measure 32 from the mating surface to the dome and 28.5 from the flycut surface which makes sense because the flycut is 3.5 mm from the mating surface....hmmm, I thought mine would be less than yours, not more?
Michael- If you space the cylinders out using the base gasket, you change the deck height , piston to valve clearance and CR. Proper way is to machine the chain housings. The pump looks to be a stock 2.2 S pump, although it could have been modified. Jury is still out as to whether this is a good, bad, or acceptable setup. I have heard pros and cons. Most cons suggest the volume of fuel put out by the 2.2 S pump will be insufficient for the 3.0's thirst. Others suggest that the mixture can be tweaked and that will suffice. The ideal pump would be the later RS pump...but I think the smaller pumps can be made to work.
Lindy- Good to chat with you the other morning. Here are the pics....I honestly think the pistons and cylinders were equally affected. Hard to say if the cylinders hurt the pistons or the other way around.
Not pretty...but the good news is that the damage was limited to the P and Cs. If the rings had broken and thrashed around...I would have debris distributed all through the engine. If a piston had come apart, my twin plug heads would have suffered. If the engine had overheated and seized...whole "nuther" story. I don't feel fortunate, but it just goes to show you...if you have any concern about an engine and lack history, better to tear it down than run it. Engines with issues don't tend to heal themselves.
I am taking the heads to get checked out tomorrow...valves, seats, guides, seals and get the springs checked. Cheap insurance.