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Howdy, folks!
I'm just getting started on a complete engine build project, and I wanted to pick everyone's brain for the best way forward here.
Let's have some fun, shall we? We're working on the next powerplant for my 1970 145s. I'll blow the money, I'll do the work, you get to play with engine config ideas at someone else's expense.
In my garage, you will find:
I have an 8-bolt B20F block (498049) with worn bores but otherwise in good shape.
I have an extra 6-bolt crank lying around, plus a spare set of 6-bolt style rods.
I also have the 8-bolt crank and rods that came with this block.
Oh, and I've got a line on some 93mm pistons with 22mm wrist pins, allegedly compatible with the 6-bolt Volvo B20. They're from a Holden inline 6 and they've been slightly modified as to wrist pin setup. So, going overbore does not mean going 8-bolt. Allegedly.
I have both B20B and B20F heads lying around.
I have steel cam gears lying around.
I've got an ipd Street Torque cam, but it's still being used.
The 8-bolt motor came with what looks like an ipd cam of some kind, well-used but not obviously defective in any way. It is prob. a Street Performance.
Oh, and I've got a blower sitting in a box in my attic. Really. Used, presumed good.
What do I want? Well, we're building a station wagon. It has a tow hitch. I want Torque. Power, meh, gimme Torque.
Budget? Whatever. I'm not married, so I can spend twenty grand if I want to, but then I'd have to go out and earn all that money back. Plus, I'm a cheapskate. So, let's just say, spend away but make it really really worth the money.
So, my questions:
1. Do the 6-bolt benefits outweigh the seat-of-the-pants engineering required? I'm under the impression that the 6-bolt crank is the way to go, because the rods are so much better. Less reciprocating mass, by a lot. Plus, I've already got pistons. No problems using this in an 8-bolt block?
2. Which cam would be best on a 2.2l overbore that's never likely to see anything over 5000 rpm?
3. How much fun am I gonna have with compression ratios?
4. Anyone know anything about doing a stroked motor?
5. Who's the machinist of choice in the pacific northwest (Seattle/Portland)?
That ought to be plenty to chew on for now. What's your dream motor for this job? Thanks in advance for your experience and wisdom.
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