FrankenFerrari - V12 Ferrari 308

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mk e
Posts: 474
Joined: Tue Dec 06, 2016 7:32 pm

Re: FrankenFerrari - V12 Ferrari 308

Post by mk e »

Engine out to change the leaking head gaskets and take care of a few other things while its out.
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I'm going to wrap the headers to control the heat in the engine bay better and see where that gets me before I look at moving the coils, which is best done engine in anyway.

I'm also switching from 308 motor mounts to testarossa mounts. The 308 engine is a flat or 180 degree crank which helps in make more hp than a normal 90 degree V8 crank, but shakes a lot more so they use special motor mounts the let the engine sit on springs, but then there needs to be a torque arm and that is a problem for me as I have no place on the engine to attach it and its ugly so I don't have it, meaning it isn't actually very safe to drive the car as-is. A 12 cyl is quite smooth so the TR mount are fairy rigid rubber mounts so no torque arm needed...just need to make them fit. I guess its good to be on to problems only running cars have :)
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mk e
Posts: 474
Joined: Tue Dec 06, 2016 7:32 pm

Re: FrankenFerrari - V12 Ferrari 308

Post by mk e »

I wrapped the exhaust so hopefully this fixes the heat in the engine bay issue. I'm going to try hosing it down with high temp paint to control the fibers and make it look a little better.
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mk e
Posts: 474
Joined: Tue Dec 06, 2016 7:32 pm

Re: FrankenFerrari - V12 Ferrari 308

Post by mk e »

If anyone following along has been wanting a V12 308 of their own this car
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http://www.exoticcarsofhouston.com/Details/X023499/1978-ferrari-308-gts
Is on the market. Just moved from the Huston dealer to an Atlanta dealer who is sorting a few little things before re-listing it. Its an older 365 engine so maybe 325-350hp?
mk e
Posts: 474
Joined: Tue Dec 06, 2016 7:32 pm

Re: FrankenFerrari - V12 Ferrari 308

Post by mk e »

Can you spot the cylinders that were running on coolant?
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mk e
Posts: 474
Joined: Tue Dec 06, 2016 7:32 pm

Re: FrankenFerrari - V12 Ferrari 308

Post by mk e »

The stuff on the pistons is goo....assembly lube, running rich and such.  Carb cleaner took it right off
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On the bottom of the gasket the compression mark make it pretty that on the sides it the flame ring not gasket material trying to make the fluid seal...which clearly doesn't work, guess there was a reason the factory used an 81mm bore not 86mm...oops. Sealant on the gasket will hopefully fix this
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I did recheck the cylinder protrusion and all readings on this bank were .0015-.0030", so right were I left them.
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mk e
Posts: 474
Joined: Tue Dec 06, 2016 7:32 pm

Re: FrankenFerrari - V12 Ferrari 308

Post by mk e »

Quick update. I settled on aviation sealant to try to get the heads sealed
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Then I made some block off plates to seal it up the hole and pressure test before moving on with assemble
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With just air it still leaks about 1/2 psi/min but with coolant its at 18 hours now and no change on the pressure gauge which seems a very good result. ... so this evening reassembly will begin.  I  still need to fix the motor mounts and the shifter shaft leak before it goes back in but its cold outside and will be for a few more weeks so I'm not in a huge hurry to be out in the driveway tuning so a few more weeks work is fine I guess. 

Funny how my 2-3 week project is what, 3 weeks in? ....and still 3+ weeks from finished. 
mk e
Posts: 474
Joined: Tue Dec 06, 2016 7:32 pm

Re: FrankenFerrari - V12 Ferrari 308

Post by mk e »

running again...I think its fixed.


1400-5200 rpm, oil pres at 75-115 but pig rich...looks like I forgot to connec trthe CLT and the ECU was adding 60% more fuel thinking the temp was -20C
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TBs a little out of sync bank to bank but I guess that's expected after having everything apart
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But it looks like all 12 were on as the misfire was seeing anything and all 4 NBO2 are showing rich and the cyl MAP was doing its thing it looks like and trying to even out the lambda readings. Hopefully I too will be test driving soon.
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mk e
Posts: 474
Joined: Tue Dec 06, 2016 7:32 pm

Re: FrankenFerrari - V12 Ferrari 308

Post by mk e »

The last throttle blip is 9k rpm then it ran out of gas before I could try for 11 ...its frikin loud

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