Folvo, Bob's 2013 Science Fair Project

[Bob Holmes]

But how much will it cost to get the "V" milled off the valve cover, a pad welded back on, and an "F" ball-milled in place? Unseen expenses.

Dan

That could break the budget...now I'm going to have to rethink the whole thing!

[TC]

The holes at the back of the block that the head doesn't cover(or does it), what do you plan on doing there??, can you drill them round and plug them??......

[milner351]

What generation of 2.3 block will this volvo head fit on... there's that 2.3 twin plug sitting behind my shop complete with bell-housing and clutch...

[Bob Holmes]

The holes at the back of the block that the head doesn't cover(or does it), what do you plan on doing there??, can you drill them round and plug them??......

Still trying to determine. If you drill them, tap and stick in a pipe plug...you probably need to redeck and hone. If you mill a round hole, and use a freeze plug, you probably wouldn't need to. If you use a block of aluminum you probably don't have those problems, but if welded on, you may lose the temper in the head...if you braze it on,

[Bob Holmes]

What generation of 2.3 block will this volvo head fit on... there's that 2.3 twin plug sitting behind my shop complete with bell-housing and clutch...

Should fit.

[TC]

Still trying to determine. If you drill them, tap and stick in a pipe plug...you probably need to redeck and hone. If you mill a round hole, and use a freeze plug, you probably wouldn't need to. If you use a block of aluminum you probably don't have those problems, but if welded on, you may lose the temper in the head...if you braze it on,

So what your saying is you have options...

And are they all water or is one an oil drain??....

[Bob Holmes]

One is an oil.

[Huskinhano]

I love these hybrid head swaps. It's amazing how well some of these work out. I can't believe how close the two are. Looks like even the head bolts line up too. I'll be following this build!

[CTX-SLPR]

I was running around today looking at 2.3L pistons (see my post on pin bushings) and ran across these:

http://www.stinger-performance.com/suspensionparts.html

Looks like you can buy the proper pistons for the swap though I know I've seen DIY setups for putting the valve notchs in.

[Karl Buchka]

DIY method: http://yoshifab.com/store/index.php?...d&productId=47

[Bob Holmes]

Nice reference there Karl.

Bob

[DanStokes]

Speaking of head swaps - A guy at Bonneville last year had an MGB with a BMW 4 cylinder DOHC motorcycle head swap. Bore centers are close enough and the cam drive can be made to work. It was pretty cool and ran well.

Dan

[CTX-SLPR]

I'm contemplating putting Nissan VQ V6 heads on a short deck 3.8L Buick since they share the same bore spacing. I'd have to make adapter plates though since the coolant jacket styles are radically different and the VQ head bolts are outside the normal deck area of the Buick engine.
Get it to run a distributor and carb and put it in an E/CBFALT car.

[Bob Holmes]

wow, I'd like to see that one.

One of the big reasons for doing this is my desire to research cam timing v exhaust backpressure. The DOHC arrangement lets me use one set of cams to fiddle with numerous different cam timing events. I've got a variety of turbos, I'm hoping to cobble together a set of turbos that offer different pressure ratios.

[OHC 6 Sprint]

I'm contemplating putting Nissan VQ V6 heads on a short deck 3.8L Buick since they share the same bore spacing.

Just out of curiosity, what is the bore spacing of the short deck 3.8L Buick?