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FrankenFerrari - V12 ferrari 308 part 4 http://gemellocattivo.com/forum/viewtopic.php?f=2&t=319 |
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Author: | mk e [ Fri Apr 24, 2020 6:37 pm ] |
Post subject: | Re: FrankenFerrari - V12 ferrari 308 part 4 |
Cut the valve pockets today. Yay! I have the head drawing from the TR manual do I know the valve angles and I have angle blocks Attachment: Attachment: The ground rod I got from mcmaster was a couple tons bigger than the wrist pins so I sanded it down Attachment: I measured the radius JE used and found the boring tool that matched Attachment: Attachment: I set up a scrap piece in the vise and used it to set the boring diameter to .100" over the valve size to give 0.050 clearance per side Attachment: Attachment: Then I picked our the piston with the worst looking valve marks, bought the cutter to the mark an moved over 0.050 and cut Attachment: Attachment: They went quick then I changed over to intakes and realized something wasn't right.....the setup piece was centered the next was clearly not?....ahh the vise is moving, add shims the recut everything just to be sure Attachment: I notice a couple odd things. The angle on the exhaust pockets was 20 not 21 I think and the spacing on the intakes was 36mm (exhaust side) not 38 but that is all fixed. The piston I realized the lose vise on is ok...but I have 1 more new piston so I'll just replace the does look quite right one. Job done now I can rebalance them |
Author: | mk e [ Sat Apr 25, 2020 6:47 pm ] | ||
Post subject: | Re: FrankenFerrari - V12 ferrari 308 part 4 | ||
No rain today....dig. It should rain tomorrow so I hope to be balancing pistons instead of digging
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Author: | mk e [ Sun Apr 26, 2020 1:12 pm ] | |||||
Post subject: | Re: FrankenFerrari - V12 ferrari 308 part 4 | |||||
Spent the morning debuting the vavle pockets....which took longer than cutting them. On to balancing I guess
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Author: | mk e [ Sun Apr 26, 2020 1:32 pm ] | |||
Post subject: | Re: FrankenFerrari - V12 ferrari 308 part 4 | |||
Taking to Wade about sending back his vise and he was all but you didn't clay them yet, what do you mean your done? ....fair enough. I think I found enough bearings to get the crank in good enough to check the pockets so that is on the list. This engine is a pain in the butt to assemble so this is about 10-20hour deal....but I want to be sure it's right so....
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Author: | mk e [ Sun Apr 26, 2020 4:35 pm ] | ||
Post subject: | Re: FrankenFerrari - V12 ferrari 308 part 4 | ||
Wrist pins 83.22-83.24g. We'll call that matched, piston time
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Author: | mk e [ Sun Apr 26, 2020 5:27 pm ] | |||
Post subject: | Re: FrankenFerrari - V12 ferrari 308 part 4 | |||
The pistons are 299.31-299.38g, we'll call that matched
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Author: | mk e [ Sun Apr 26, 2020 6:17 pm ] |
Post subject: | Re: FrankenFerrari - V12 ferrari 308 part 4 |
As I was washing up I realized there is an issue with claying the valve pockets....there are no exhaust seats in the heads yet. I guess I'm kind of out of excuses not to finish the head at this point and I kind of need then done so heads next. |
Author: | mk e [ Sun Apr 26, 2020 10:05 pm ] | ||
Post subject: | Re: FrankenFerrari - V12 ferrari 308 part 4 | ||
I can't for the life of me figure this out....the wave has ended and I have no idea where it came from.
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Author: | mk e [ Sun Apr 26, 2020 10:14 pm ] | ||
Post subject: | Re: FrankenFerrari - V12 ferrari 308 part 4 | ||
wait, I found more tabs...its R&T again but I can't find anything so still weird.
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