HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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951 rebuild

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951 rebuild

Post  Marc948GTR on Mon Nov 05, 2012 6:59 am

Hi,

Just bought a 951 transaxle from a 1986 944T.

I plan to put in a LSD, do the N/A 5th gear swap and use an oil cooler.

Questions:

- What type of LSD have been used with success (OEM, Wavetrac, Quaife, etc...) ?

- Same question for the oil cooler (OEM or aftermarket) ?
- Anyone knows what type of fittings can be used at the stock oil cooler locations for an external one ?

- Any cable operated shifters available for this unit ?

Thanks


Last edited by Marc948GTR on Sun Dec 02, 2012 2:37 pm; edited 1 time in total
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Re: 951 rebuild

Post  Marc948GTR on Sun Dec 02, 2012 2:36 pm

Found these.

[img][/img]

But they are a bit too far, shipping cost will probably be more than the parts.

Anyone knows if similar adapters are available in Canada or USA ?

Thanks.
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Re: 951 rebuild

Post  spence on Sun Dec 02, 2012 3:37 pm

Shipping costs and customs taxes killed me on a lot of the parts I bought too... Sucks!!
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Re: 951 rebuild

Post  87-944S on Sun Dec 02, 2012 5:16 pm

Where did you find those adapters? I'd like a set!
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Re: 951 rebuild

Post  944-LT1 on Sun Dec 02, 2012 11:02 pm


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Re: 951 rebuild

Post  Tehone on Sun Dec 02, 2012 11:51 pm

I was thinking along the same line about getting rid of the stock tranny cooler for something more appealing and this is what I saw and did.
I purchased a turbo trans with the Evil or Very Mad cooler.

I went to the hardware store and got two natural gas brass fittings (3/8 female NPT and the male side ?? I can't remember Rolling Eyes , sorry) that came close to the ID of the cooler line ID with enough material OD male thread end to turn down on a lathe with a groove up against the hex to slip into the tranny and then use a 8-AN fitting with 3/8-NPT threads (blue fittings in photo). I wasn't happy with the wall thickness where the clip fit around the brass fitting as the brass fitting didn't have the same thickness all the way to the hex at the female end leaving it on the thin side so I discarded.
I got two 8-AN flare (both sides) unions (black fittings in photo) from Summit and turned downwd one side with a groove at the hex area and walla cheers . The 8-AN fittings provide enough material to shave off and the ID is the same through out.

end results....I have not progrossed in this area at this time with any cooler so I capped the fittings.


The "O" rings I'm sure can be obtained from auto parts stores, AN-fittings from Summit, Jegs, etc.., and the reatianer clips I don't know. I'm not a machinist but I am learning to make washers and spacers and need to redo one of the fittings as it is not as tight as I think it needs to be.

Hope this helps.



Last edited by Tehone on Mon Dec 03, 2012 12:12 am; edited 1 time in total (Reason for editing : fitting clarification)

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Re: 951 rebuild

Post  Rich L. on Mon Dec 03, 2012 1:03 pm

Lemming found the stock cooler to be sufficient under race conditions:

http://944hybrids.forumotion.com/t1648-transmission-temps

But I like 944-LT1's setup for a tranny that doesn't have the pump in it. Is that an RX7 cooler? I guess there are naca ducts in the rear windows force feeding it air from above?

Rich
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Re: 951 rebuild

Post  944-LT1 on Mon Dec 03, 2012 3:24 pm

Rich L. wrote:
But I like 944-LT1's setup for a tranny that doesn't have the pump in it. Is that an RX7 cooler? I guess there are naca ducts in the rear windows force feeding it air from above

Thats not my stuff. Thats from somebody on the list.
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Re: 951 rebuild

Post  Marc948GTR on Tue Dec 04, 2012 5:39 pm

Tehone,

Thanks for the info and pics.

Do you have the actual dimension (final OD) that you shaved off the unions ?

My trans didn't have the oil cooler on it, so can't get actual measurement for the fittings (tolerance from the ID + O-ring).

Thanks.

Marc
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Re: 951 rebuild

Post  Marc948GTR on Tue Dec 04, 2012 6:14 pm

spence wrote:Shipping costs and customs taxes killed me on a lot of the parts I bought too... Sucks!!

I started drop shipping to a US company that is only an hour away from me and it usually saves me alot (especially when shipping is free within the US). I only pay around 5% tax at the border.

Marc
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Re: 951 rebuild

Post  Marc948GTR on Tue Dec 04, 2012 6:18 pm

FlierMike,

Can't seem to be able to respond to your PM.

Check your profile options, so people can reply.

Marc.
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Re: 951 rebuild

Post  Marc948GTR on Tue Dec 04, 2012 9:52 pm

Can anyone refer me to a reputable Porsche transaxle builder in the North-East region ?

Want to do the early N/A 5th gear swap, install a Quaife LSD and overall refresh (bearings, seals, synchros, etc.).

Thanks.
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Re: 951 rebuild

Post  LEEEZARD7 on Tue Dec 04, 2012 10:00 pm

marc try cory at planet9eleven in oklahoma, they build transaxles all the time for all porsche's. can be shipped anywhere in the us likely around 100. -150. so as long as you find a reputable builder or company you should be good. could also use california motorsports, all they do is transaxle rebuilds but they are very pricey.

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Re: 951 rebuild

Post  Techno Duck on Tue Dec 04, 2012 10:13 pm

Try Kevin Gross of Catellus Engineering in the New England area. He has an excellent reputation for 944 transaxle work. He came highly recommended by a few people i know in the PCA. Also if you search on RL he has a long standing reputation on there aswell.

Ill be sending him my AOR gearbox for rebuild next winter when my check book cools off .

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Re: 951 rebuild

Post  Porschedoc on Wed Dec 05, 2012 8:19 am

Yes, Kevin Gross is top notch but not cheap. Before you spend that money though, I would highly encourage you to ditch the quaife LSD and go to an OS Gieken or guard LSD that is a true LSD on both accel and decel. Quaife will not give you a true lockup on decel, or if you start to lift a wheel under hard cornering. Quaife is the bottom of the barrel of LSD options.

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Re: 951 rebuild

Post  Marc948GTR on Fri Dec 07, 2012 7:14 pm

Thanks for the reference and advice guys.
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post 951 trans cooler fittings

Post  Tehone on Wed Dec 12, 2012 8:36 pm

Marc,

The ends on the original cooler coil outside diameter measured at .622" and .624" with the groove for the retainer at .548" deep.

The difference in the two ends (aluminum, on cooler coil and tranny housing) I think came from the cooler not being supported properly and wobbled some.

I used Summit AN fittings (8-AN unions) turning the threads off and then going to .611" dia on one side of the union. Prior post, the fittings are slighlty looser than I liked from the brass fittings I had turned as the diameter on those were .622" and tight slip fit.

The ID of the 8-AN fitting is slightly larger than the oil cooler coil end ID.

The retaining groove up aganst the hex was done using a 5/32" parting tool going to a .548" dia.

I don't have a size for the "O"-ring without causing a oil slick, tranny mounted, sorry. "O"-ring slips into groove inside the tranny housing inlet / outlets.

Hope this works for you and others.








Last edited by Tehone on Wed Dec 12, 2012 9:00 pm; edited 1 time in total (Reason for editing : add pics)

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