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Registered
Join Date: Apr 2007
Location: wisconsin
Posts: 2,553
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930, how easy to change just 1st gear synchro?
Will be mating motor back to trans soon...
If this is relatively easy, would like to diy... If a huge to do, probably won’t... Thoughts? |
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10-25-2019, 03:14 PM
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Join Date: Aug 2014
Posts: 185
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depend how DIY you are, capable of remove and reinstalling the engine and trans yourself, then I think you should be able to do the synchro.
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10-29-2019, 07:21 AM
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Registered
Join Date: Apr 2007
Location: wisconsin
Posts: 2,553
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Quote:
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10-30-2019, 05:17 PM
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I did mine years ago, but not too difficult. Changing syncro teeth on the gears is the biggest issue. There is a thread by Infraredcalvin that also references another thread about 930 transmission overhaul. If you are just taking off first gear, you will not have totally disassemble the gear clusters.
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-Dennis 1977 930 Slant, MS3 EFI, Carrera intake, Twin plug, Powerhaus headers, Magnaflow muffler, Garretson intercooler, GTX3071R |
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10-31-2019, 08:16 AM
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It’s much more involved than the 914 1st gear. If you go in, you might as well do 3rd while you’re at it... then again you might as well get all of them... BTDT
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Infraredcalvin - AKA Pat '76 Turbo Carrera #311 - Factory LSD, Sport Seats ‘71 914-6 GT 3.4L twin plug track car '75 914 GT clone project '71 914 track car, fresh 2165 FAT motor (for sale soon) |
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10-31-2019, 02:54 PM
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Registered
Join Date: Oct 2012
Location: Peoria, Arizona and Big Rock, IL
Posts: 296
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07 911 Turbo - Pilot Sport Cup 2 ZP 96 Carrera 4 - Toyo R888r 73 911E - Hoosier R7 + twin 75's 92 Corvette - Nitto NT01 14 BMW X3 - Pilot Sport A/S 4 |
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10-31-2019, 03:01 PM
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Smart quod bastardus
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for the amount of labor involved in disassembling the tranny just replace all the synchros. especially 1st and second. they see the most wear. you are goin got have to fully disassemble the tranny to do this job.
watch the video posted above......its great.
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1979 930 Turbo....3.4L, 7.5to1 comp, SC cams, full bay intercooler, Rarlyl8 headers, Garret GTX turbo, 36mm ported intakes, Innovate Auxbox/LM-1, custom Manually Adjustable wastegate housing (0.8-1.1bar),--running 0.95 bar max ---"When you're racing it's life! Anything else either before or after, is just waiting" |
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11-13-2019, 01:01 PM
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I would rather be driving
Join Date: Apr 2000
Location: Austin, TX
Posts: 9,108
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Hardest part is locking the gears to spin the nut off the gear stack. And then you need a puller for the end gear.
Are you familiar with 911/930 transmissions and how they operate internally? There are a few 901 and 915 tutorials out there for a guide. The gear stack has to come out and separate from the middle case. Then the gears have to be removed from the shafts. Then the gears disassembled to remove the syncro ring. Also check the brake bands. Might as well address the slider and dog teeth while its apart. I usually see 2nd and 3rd with most wear.
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Jamie - I can explain it to you. But I can not understand it for you. 71 911T SWT - Sun and Fun Mobile 72 911T project car. "Minne" - A tangy version of tangerine #projectminne classicautowerks.com - EFI conversion parts and suspension setups. IG Classicautowerks |
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11-13-2019, 03:31 PM
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1976 Porsche 930 3.0 turbo
The Beater
71EURO6
Herman the German
