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MichaelBrenner
Samba Member
Joined: July 16, 2008
Posts: 137
Location: Costa Mesa, CA
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 Posted: Tue Mar 06, 2012 6:53 pm Post subject: |
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Thanks guys, hopefully these will survive in my 12:1 desert motor as long as I don't get greedy and try to lean it out too much this time!
Narrow envelope: 150 main/120Z air was rich, 140 main and 150Z air burnt through #3! Damn it ran nice until though..... I'm thinking 145 or 147.5 with 120Z this time around depending on what the AFX tells me. It's just money right!?!
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Brenner Racing
SNORE 1179 |
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DarthWeber
Samba Member
Joined: November 24, 2007
Posts: 7543
Location: Whittier,CA
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| Posted: Mon Mar 05, 2012 8:58 pm Post subject: |
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Might get high but you will get a better view! 
I referenced AC.Net in my first post above. FYI. YMMV. AFL/CIO RIP IRS....
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| Mitey62 wrote: |
| Swapped the Compufire for a Bosch blue and some points I had sitting around, started 1st crank. Took her out for a drive, pulls harder, more RPM, and runs smoother. I think I'll be sticking with points from now on. |
| RockCrusher wrote: |
JB weld the case halves....that'll keep the fretting to a minimum.  |
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spencerfvee
Samba Member
Joined: August 19, 2004
Posts: 3068
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| Posted: Mon Mar 05, 2012 4:53 pm Post subject: |
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can i get high doing that ? spencerfvee
| DarthWeber wrote: |
| Spencer, go up 2 flights of stairs ^^^ |
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DarthWeber
Samba Member
Joined: November 24, 2007
Posts: 7543
Location: Whittier,CA
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| Posted: Mon Mar 05, 2012 3:33 pm Post subject: |
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Spencer, go up 2 flights of stairs ^^^
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| Mitey62 wrote: |
| Swapped the Compufire for a Bosch blue and some points I had sitting around, started 1st crank. Took her out for a drive, pulls harder, more RPM, and runs smoother. I think I'll be sticking with points from now on. |
| RockCrusher wrote: |
| JB weld the case halves....that'll keep the fretting to a minimum. |
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spencerfvee
Samba Member
Joined: August 19, 2004
Posts: 3068
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| Posted: Mon Mar 05, 2012 2:15 pm Post subject: |
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have you tried john at air cooled for a set ? or jake raby . or F.A.T . gene berg spencerfvee
| MichaelBrenner wrote: |
| There are no 85.5 forged available as far as I know, if you have a set somewhere I would gladly buy those up right now. |
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gimmesomeshelter
Samba Member
Joined: May 08, 2004
Posts: 1466
Location: San Carlos, CA
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| Posted: Mon Mar 05, 2012 1:19 pm Post subject: |
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Hello-
| Quote: |
| Buy the best and cry once. |
X2.
Cheers,
Paul
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"I would rather have questions that can't be answered than answers that can't be questioned."
Richard Feynman |
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DarthWeber
Samba Member
Joined: November 24, 2007
Posts: 7543
Location: Whittier,CA
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| Posted: Mon Mar 05, 2012 11:16 am Post subject: |
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http://vwparts.aircooled.net/Mahle-Piston-Cylinder-Set-85-5mm-x-69mm-Forged-p/85.5x69fm.htm
Don't whine about the price now! Buy the best and cry once.
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| Mitey62 wrote: |
| Swapped the Compufire for a Bosch blue and some points I had sitting around, started 1st crank. Took her out for a drive, pulls harder, more RPM, and runs smoother. I think I'll be sticking with points from now on. |
| RockCrusher wrote: |
| JB weld the case halves....that'll keep the fretting to a minimum. |
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MichaelBrenner
Samba Member
Joined: July 16, 2008
Posts: 137
Location: Costa Mesa, CA
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| Posted: Mon Mar 05, 2012 9:51 am Post subject: |
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There are no 85.5 forged available as far as I know, if you have a set somewhere I would gladly buy those up right now.
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Brenner Racing
SNORE 1179 |
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spencerfvee
Samba Member
Joined: August 19, 2004
Posts: 3068
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| Posted: Mon Mar 05, 2012 5:06 am Post subject: Re: Mahle Cast 85.5 vs. AA Cast 85.5 |
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all stock pistons were made the same way . you get what you pay for .i like A&A pistons i think there stock cast pistons are the same as mahle . if you want better pistons go with a set of mahle forged pistons . from $170.00 to $200.00 a set now adays . spencerfvee...................................
| MichaelBrenner wrote: |
I have a set of the Mahle Cast with the steel strut in the wrist pin area, that strikes me as not good since it's dissimilar metal to the piston and I would think that it would expand differently than the rest of the piston when pushed to the limit. The oil ring slot is also alarming with how large it is, I've read that these pistons will sometimes crack with this large cutout in the piston. The cylinders seem to be reasonable quality, and all the pistons/cylinders seemed to deck very consistently when I mocked up the pistons/cylinders.
Anyone here have any real experience or knowledge of whether the AA's are much different or similar in quality? The AA's are much cheaper and I'm hoping they are a decent alternative or possible better? |
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MichaelBrenner
Samba Member
Joined: July 16, 2008
Posts: 137
Location: Costa Mesa, CA
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| Posted: Mon Mar 05, 2012 3:24 am Post subject: Mahle Cast 85.5 vs. AA Cast 85.5 |
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I have a set of the Mahle Cast with the steel strut in the wrist pin area, that strikes me as not good since it's dissimilar metal to the piston and I would think that it would expand differently than the rest of the piston when pushed to the limit. The oil ring slot is also alarming with how large it is, I've read that these pistons will sometimes crack with this large cutout in the piston. The cylinders seem to be reasonable quality, and all the pistons/cylinders seemed to deck very consistently when I mocked up the pistons/cylinders.
Anyone here have any real experience or knowledge of whether the AA's are much different or similar in quality? The AA's are much cheaper and I'm hoping they are a decent alternative or possible better?
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Brenner Racing
SNORE 1179 |
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