 Mystery engine is out |
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| Mark Henry |
 Aug 20 2020, 08:19 AM
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#141
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that's what I do!  Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada  |
Looks like the heads have a semi-hemi cut.
Are you turbo charging again? If not I'd use a bit more CR. But you might not be able to if the head CC is too big. |
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| Tdskip |
Aug 20 2020, 08:27 AM
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#142
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None 
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QUOTE(Mark Henry @ Aug 20 2020, 09:19 AM)  Looks like the heads have a semi-hemi cut. Are you turbo charging again? If not I'd use a bit more CR. But you might not be able to if the head CC is too big. Good morning Mark. I decided to ditch the turbo set up, so will be normally aspirated. I discussed targeting a 8.2 - 8.5 CR with the machine shop, it all needs to be checked and figured out. Since it came to be as someone else's work lots of unknowns here still. It did have copper head shims installed when I pulled the heads off. Bit of a gamble to be sure, but even when it was only running on 3 of 4 it felt pretty strong and that was with a wonky single Weber with whatever compression ratio it had. |
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| jd74914 |
Aug 20 2020, 08:39 AM
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#143
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Its alive Group: Members Posts: 4,780 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
Are you re-using the cam in it? Or at least measuring it to see what was there? If the combo did work well N/A it'd be a shame to mess it up.
Looking forward to see what comes of it. Glad the heads are being reused! |
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| Tdskip |
Aug 20 2020, 09:49 AM
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#144
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None
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QUOTE(jd74914 @ Aug 20 2020, 09:39 AM) Are you re-using the cam in it? Or at least measuring it to see what was there? If the combo did work well N/A it'd be a shame to mess it up. Looking forward to see what comes of it. Glad the heads are being reused! Hi Jim - hoping to re-use the cam since it seemed to work well but everything being inspected since the case is being split. Thanks for the ideas and interest in the build. |
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| Tdskip |
Sep 11 2020, 02:00 PM
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#145
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None
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Quick update - Brothers Machine Shop, nice people to work with, were not thrilled with the heads that were on the engine so I brought them a spare set of 2.0l heads that had already been prepped for a big bore build. I am having them rebuild and port those, so will be another couple weeks before much more is done.
Flywheel I bought second hand is junk, ugh, so need to track a good one down or pop for a new one. |
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| djway |
Sep 11 2020, 09:11 PM
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#146
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Senior Member Group: Members Posts: 787 Joined: 16-October 15 From: Riverside Member No.: 19,266 Region Association: Southern California |
QUOTE(Tdskip @ Sep 11 2020, 01:00 PM) Quick update - Brothers Machine Shop, nice people to work with, where not thrilled with the heads that were on the engine so I brought them a spare set of 2.0l heads that had already been prepped for a big bore build. I am having them rebuild and port those, so will be another couple weeks before much more is done. Flywheel I bought second hand is junk, ugh, so need to track a good one down or pop for a new one. Did you get to see the 914 they are working on at Brothers? Maybe a couple by now. |
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| Tdskip |
Sep 12 2020, 07:41 AM
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#147
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None
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QUOTE(djway @ Sep 11 2020, 10:11 PM) QUOTE(Tdskip @ Sep 11 2020, 01:00 PM) Quick update - Brothers Machine Shop, nice people to work with, where not thrilled with the heads that were on the engine so I brought them a spare set of 2.0l heads that had already been prepped for a big bore build. I am having them rebuild and port those, so will be another couple weeks before much more is done. Flywheel I bought second hand is junk, ugh, so need to track a good one down or pop for a new one. Did you get to see the 914 they are working on at Brothers? Maybe a couple by now. I didn’t, but I did see a super cool sandrail dragster! |
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| wndsrfr |
Sep 12 2020, 07:48 PM
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#148
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Senior Member Group: Members Posts: 1,428 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region
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QUOTE(Tdskip @ Sep 11 2020, 12:00 PM) Flywheel I bought second hand is junk, ugh, so need to track a good one down or pop for a new one. Check with FAT...they sourced me a good used FW when I got my stroker crank from them... |
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| Tdskip |
Sep 13 2020, 08:58 AM
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#149
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None
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Thanks John, good idea.
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