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> Adding a 915 trans to a 6 conversion, There must be a better way
GeorgeRud
post May 30 2017, 07:41 AM
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Vellios had some great ideas, and his 915 trans conversion works well if carefully set-up. It was a 914 rear cover with the mounting ears and then a 914 side shifter type of linkage. He made all sorts of interesting parts back then, not just the 915 conversion. Does anyone still have a copy of his catalog?
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Steve
post May 30 2017, 07:42 AM
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QUOTE(Racer Chris @ May 30 2017, 05:39 AM) *

QUOTE(Steve @ May 30 2017, 12:26 AM) *

Looks more like a poor copy of the vellios kit.

I think those are unfinished Vellios parts.

I heard he passed away. There were piles of unfinished vellios parts on eBay. I think MB911 bought some of the unfinished oil tanks. The shift console looks like a vellios part versus Martin Botts 916 console.
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Beach914
post May 30 2017, 07:49 AM
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Not doing anything with it at the moment but next after I get my 3.0L project further along.
Going to need lots of help from Steve......
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Steve
post May 30 2017, 12:46 PM
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QUOTE(Beach914 @ May 30 2017, 06:49 AM) *

Not doing anything with it at the moment but next after I get my 3.0L project further along.
Going to need lots of help from Steve......
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Nice!! Looking forward to it.
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larryM
post May 31 2017, 02:42 PM
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QUOTE(porschetub @ May 29 2017, 11:23 PM) *

QUOTE(larryM @ May 30 2017, 03:45 PM) *

p,s, - i have 3 good 901's & they'll handle 250hp which is all my 3.2 makes


.... really is the 901 that bad,even if you exceed 250hp it is cheap enough to replace or adjust your driving style.

The 915 isn't the total answer in fact the real 911 guys grizzle about them,they aren't as strong as expected and a very noisey....not such an issue in a 914 but in a 911 not so good.


- i gently use 1st to get up steep drives & such - but that's about all it is good for even behind a 1.7

i have an acquaintance who ran a chevy 350 in an scca 914 - never broke it - he is a former PCNA employee - it was his advise that convinced me me stay with the 901

as discussed elsewhere on this site - the main problem with a 901 is if you rev to 6000 & drop the clutch in 1st gear - it will twist off the mainshaft - when we AX, we all just start in 2nd gear - and stay there - kinda like having an automatic! - a good-stronger-durable clutch helps

for we on a budget - the 901 is an OK conversion solution vs $10K for a 915-916

904 mainshafts can solve that - but they are/were rare as hen's teeth - one FS on ebay now - $1200 - there was someone making repros back in 2008 -
repro here for $1415 - https://retro-sport.com/porsche-gears/porsc...haft-new-albins

901s are also subject to wear in the intermediate plate (i broke 2 due to that when racing) - there is a fix for that - originally developed by Dwight Mitchell for 911's https://www.google.com/search?q=901+interme...-8&oe=utf-8

both above mean a rebuild, of course - but still arguably cheaper than a 915 rebuilt PLUS Bott kit

- 915's are subject to similar wear issues in the side plates & i know of 2 guys who got cheap 915's for a 914-conversion & wound having to rebuild 'em beyond the ring-gear flip (no longer cheap)

so it's kinda a tossup depending on how rich you are feeling, or actually are

- if we are talking about converting a 4 to a 6, the economics are not there - imho -4 conversion cars are never worth enuf to justify the added cost

p.s.- interesting about those C-list parts - i kinda wondered if it was somebody's attempt to steal someone else s work given the included drawings
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naro914
post May 31 2017, 04:13 PM
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Our race car "Papa Smurf" has a 915 with Vellios conversion that was set up really nice. Got the whole thing for $2000, so it was worth it. Definitely the best shifting race 914 you'll drive....feels almost gated and inspires confidence with each shift....though "Huey", our street car with 3.2 engine and 901 trans also shifts amazingly well...

Having said that, if Clay ever figures out a good Boxster S trans w/cable shift conversion, I'm very interested....
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eitnurg
post Jun 1 2017, 04:22 AM
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QUOTE
Having said that, if Clay ever figures out a good Boxster S trans w/cable shift conversion, I'm very interested....

Ditto.
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Steve
post Jun 1 2017, 08:43 AM
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Curious what the 915 guys are running for a shifter. I'm running a renshift, but I still nick reverse when shifting from 5th to 4th. I have spent way to many hours adjusting it, so I know it's as good as it gets. If I shift from 5th, let it settle in the center plane on its own, then I can shift into 4th without hitting reverse. I heard wevo is the best. I will try that next.
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GeorgeRud
post Jun 1 2017, 09:02 AM
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I'm using the stock 915 shift console with my 915, and it works OK. I think you have to be careful with the 5-4 shift, but fortunately that's not usually a shift I need to do quickly.
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naro914
post Jun 1 2017, 09:12 AM
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QUOTE(Steve @ Jun 1 2017, 10:43 AM) *

Curious what the 915 guys are running for a shifter. I'm running a renshift, but I still nick reverse when shifting from 5th to 4th. I have spent way to many hours adjusting it, so I know it's as good as it gets. If I shift from 5th, let it settle in the center plane on its own, then I can shift into 4th without hitting reverse. I heard wevo is the best. I will try that next.

I use Rennshift and never nicked reverse or had any issues.
My set up:
Rennshift with Tangerine Racing shift linkage kit to Vellios side shift conversion.
Chris Foley made me an intermediate adjustment piece that allowed for minor length adjustment between the rod in the center tunnel to the Tangerine shift rod outside the firewall. Plus we had to make a small spacer to adapt the linkage parts to the Vellios console.
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mepstein
post Jun 1 2017, 07:13 PM
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I'd like to make one of these work


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Dr Evil
post Jun 4 2017, 08:13 AM
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Steve
post Jun 4 2017, 04:00 PM
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QUOTE(Dr Evil @ Jun 4 2017, 07:13 AM) *

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See what you missed? Absolutely nothing... same topic different decade.
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Jetsetsurfshop
post Jun 3 2018, 12:27 PM
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Steve
post Jun 3 2018, 01:20 PM
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Don't hold your breath waiting for this... I'm happy with my Martin Bott 916 kit on my 1986 trans.
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Dr Evil
post Jun 4 2018, 12:56 PM
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QUOTE(Steve @ Jun 3 2018, 03:20 PM) *

Don't hold your breath waiting for this... I'm happy with my Martin Bott 916 kit on my 1986 trans.

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Jay Wellwood
post Aug 3 2019, 11:55 AM
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Any update to this topic?

Quite interested in using a 915 trans in a 914

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Steve
post Aug 3 2019, 03:15 PM
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There’s a vellios 915 in the classifieds.
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burton73
post Aug 4 2019, 10:40 PM
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http://www.cableshift.com/

this is what I am going to use on my 930 box that is set up for 914 . LSD and oil cooling pump set up.

Bob B
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dr914@autoatlanta.com
post Aug 5 2019, 07:50 AM
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As the owner of two 914s with 915 conversions (one a 916) I would say DON"T DO IT!) the bulky shifting that 911s with 915s in them is accentuated, and the extra bit of weight makes the cars heavier feeling and more tail happy. 901 with the stronger intermediate plate works just fine.


QUOTE(mepstein @ Nov 5 2016, 06:46 AM) *

Is there any reason I shouldn't consider working up a cable shifter instead of the traditional 916 shift linkage. The current 916 kit is $3-3250. Add in labor for machining and assembly and you're at $5k just to make the trans shift correctly. The suby guys are doing the shifting with $300 worth of cables and hardware. Am I missing something here?
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