I dropped off my E31 last week. I had told Dave that among the receipts was a receipt from BC Gerolomy. But the receipt was vague and I couldn't tell what all had been done. Given my time, or lack there of, I had the head removed by my son-in-law and he brought it down to Rebello. I had not seen it off the motor.

Dave says big valves, port work, conservative cam. Dave will be putting a cam more appropriate to a 3.0 stroker motor with Megasquirt Pro. Previous owner just saved me a couple grand in Rebello head work! Plus it's BC Gerolomy! That's some old school stuff right there!

Edited March 18, 201510 yr by conedodger

Wow, what a smokin deal. I've got a pristine E31 sitting on the shelf and one of these days....

Grannyknot,

 

Keep that E31 stock. 

They are getting to be as rare as unicorns!

They are as rare as unicorns!

My guess though, BC Gerolomy modified E31 heads still in the wild are even more rare!

We've got a small herd of unicorns in this thread.  I have one on my work table right now being polished.

I'm not touching mine yet. Pretty sure it's unmolested and figure eventually gonna have to have it at least refreshed with seals and seats.

I have over-engineered the cooling system to avoid that overheating that eventually destroys Z-Car heads...

I have over-engineered the cooling system to avoid that overheating that eventually destroys Z-Car heads...

Do tell more, please. 

 

I've put the larger 280 radiator and a full ZX shroud on mine, but's that's all. 

External coolant return? Like how they do it in Japan?

Edited March 18, 201510 yr by Blue

Or maybe routing out of the front freeze plugs and into the rear with a small external radiator in the path?

Or using a later head and reading temperature at the sensor bung above plug 6... or routing coolant into it?

Edited March 18, 201510 yr by Blue

DIY but remember:

Edited March 18, 201510 yr by Blue

Got a call from A buddy of mine today. He was having some interior work done on his '78 Volvo and saw Rebello Racing across the parking lot. He dropped in and dropped my name and Dave said he had been trying to reach me. When Mike said that, I realized I had forgotten to tell Dave when I changed my number! Yikes!

 

Anyway, the engine is done. It will take while to outfit it with its EFI stuff before it is fired, but progress!