Porsche 914 - 8 GTT, March '25 Update Options

[NorCalScott]

@NorCalScott Yes it is a tight fit in there, we worked with our friends Aasco in OC, Calif for the mating of Transaxle + engine. They came up with the billet 19mm thick adapter plate, which didn't cause much loss of space (towards rear of trunk). They also engineered the clutch pack and hydraulic T/O/B. There will still be some angle to the cv's, but we have sourced spec built joints + axles to deal with that.
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Since we're on the subject. What's your opinion on axle angle? I've read places that these CV joints work perfectly well with angles of 15 degrees and maybe even more. If you look at sand rails, that appears to be true. Some say the angle encourages lubrication. If you could, would you run zero angle? Seems like the natural movement of the suspension would be enough to move the grease around in the CV joint. Also, I've read that it's not a good idea to run plunge CV joints on both the inner and outer locations. That it's better to have either the inner or outer CV a fixed/non-plunging CV to prevent the axle from floating inward and outward as it rotates.

[Maltese Falcon]

@NorCalScott the c/v joint lube that we are using is Dupont Krytox...and operates between -34° to 288°c., also resistant to "Caking up". Our 300m alloy axles are mfg without the inner-bump (as o.e.) which allow the axles the ability to free float. Also at the end (clip area) we are not use standard Circlip.
Instead we use the (SwayAway) provided Spiral clip.
Given the operating angles we will encounter, plunging c/v's at both ends. Full suspension drop has the rear axle "Droop" at minimum...no where near a standard (long travel) 914 suspension. The drop is just enough to remove tires when up on the airjacks. JRZ makes these Limit adjustments internally in their (nitrogen) shocks.

[jd74914]

Have you used Krytox before as CV lube? Just wondering. I’m a huge fan of the stuff (I used to have a free supply of ‘expired’ Krytox courtesy of NASA regulations) and have used it everywhere from skateboard bearings to pipe threads to bike bottom brackets, but never thought above CVs.

[Maltese Falcon]

@jd74914 Jim, yes I was informed of this lubricant by 2 of the race shops I've been associated with. They found out about it through their Indy car friends, and use it for their Porsche IMSA clients c/v joints. Yes it is Mil-Spec and pricey...good that you can get it (out of date) cheap ! For us car guys >>just keep it capped up tight, it lasts a long time.
Marty

[jd74914]

That's pretty cool!

A tube does go a long way. (IMG:style_emoticons/default/smile.gif)

[NorCalScott]

@jd74914 Jim, yes I was informed of this lubricant by 2 of the race shops I've been associated with. They found out about it through their Indy car friends, and use it for their Porsche IMSA clients c/v joints. Yes it is Mil-Spec and pricey...good that you can get it (out of date) cheap ! For us car guys >>just keep it capped up tight, it lasts a long time.
Marty

After going down the Krytox internet rabbit hole, I'm curious which formula you use if you don't mind sharing. My guess is the GPL 227.

[Maltese Falcon]

#K-24115

[NorCalScott]

Thanks. I didn't even see that one in my research. There are too many. But judging by prices, that little tub must be $$$$$.

[Maltese Falcon]

Thanks. I didn't even see that one in my research. There are too many. But judging by prices, that little tub must be $$$$$.

You can lube 8 joints with that 1) tub...@ $210.00 (2019 price)
So...not that expensive for the right stuff (IMG:style_emoticons/default/smile.gif)

[NorCalScott]

Thanks. I didn't even see that one in my research. There are too many. But judging by prices, that little tub must be $$$$$.

You can lube 8 joints with that 1) tub...@ $210.00 (2019 price)
So...not that expensive for the right stuff (IMG:style_emoticons/default/smile.gif)

I can definitely see why people pay the extra for it after reading some of the testimonials on various forums. Expensive grease, but cheap insurance in the racing world.

[ClayPerrine]

Thanks. I didn't even see that one in my research. There are too many. But judging by prices, that little tub must be $$$$$.

You can lube 8 joints with that 1) tub...@ $210.00 (2019 price)
So...not that expensive for the right stuff (IMG:style_emoticons/default/smile.gif)

I can definitely see why people pay the extra for it after reading some of the testimonials on various forums. Expensive grease, but cheap insurance in the racing world.

Everything goes smoother with good lube. (IMG:style_emoticons/default/biggrin.gif)

Can we buy some of the expired stuff from you?

Clay

[Maltese Falcon]

@ClayPerrine I'll shoot you a PM this weekend !
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[Maltese Falcon]

While I've been pulling wires + cables, these are the 2 pressure switches (lower) for Low o/p Big Red light; the other (upper) for Fasten seat belt light...which starts illuminating at 7 psi boost.

[Maltese Falcon]

Low o/p Red light (gear selection indicator just opposite), and Fasten seat belt light in the stock location

[sixnotfour]

Cllasshttps://www.aircraftspruce.com/catalog/hapages/teefitting2.php build.. those ??
https://www.aircraftspruce.com/catalog/hapa...teefitting2.php

[Maltese Falcon]

@sixnotfour I keep a good assortment of weatherhead brass 1/8", 1/4", 1/2", 3/4" npt fittings (and flare end) here at the shop for all sorts of air, hydraulic, repairs and projects.
Also have several mfg shops within 4 miles of the shop for all sorts of custom made lines: fluids, hydraulics, or air pressure.
Thx for the linky link !
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[AZBanks]

I like the Cayenne engine but I think this engine would be even better.

https://collectingcars.com/for-sale/1984-mc...e-tag-f1-engine

[Maltese Falcon]

@AZBanks these folks "Lanzante Limited" already have the McLaren engines stuffed into their small production of the Niki Lauda tribute 930's...but you're correct Very Cool !

[Maltese Falcon]

Lanzante Limited exhibit parked directly across from the MSDS / 9148gtt tent at the last Rennsport Reunion 2018.
Did you check these out @AZBanks while you were there ¿

[JmuRiz]

Looks like there's another engine available for them:
https://www.thedrive.com/news/44237/buy-thi...il-swap-project