Pre-'87 G50 conversion parts list from donor '87 chassis?

[PcarPhil]

Hey there folks,

I'm wondering what the complete parts list would be to perform a G50 conversion into a pre-G50 911.

I've got an '87 911 donor that was hit hard in the LF. Before the chassis gets cut up I wonder what sheetmetal parts I should be aware of that could be part of a G50 conversion.

Torque tube, complete floor pan, rear seat pans, what?!

I think when Zuffenhaus did Matteo's car they replaced the whole floor pan with center tunnel and rear seat pan area.

Thanks for the help!

[KTL]

Depends on how you want to handle the installation into the pre-G50 car. What year is the transplant recipient?

Reason I ask is for brake booster installation, as pre-77 non vaccuum boosted brake cars will need the brake pedal bulkhead and vaccuum booster to put the master cylinder reservoir (for clutch and brakes) in the front trunk if desired.

You can get away with not having to transfer the torsion bar tube from the donor '87 car if you're leary about undertaking such chassis modification. Patrick Motorsports can do a shortened bellhousing conversion on the G50 trans and modify the recipient car's trans mount to accept the G50. So you really don't need any sheetmetal/chassis parts if you don't want to go that route.

To do a "factory" G50 install, you need from the '87:

Complete shifter assembly, shift rod, shift rod coupler
Clutch master cylinder and slave cylinder + hydraulic line plumbing
Pedal cluster to house the clutch master cylinder
Brake fluid reservoir and mounting bracket
Transmission with trans mount and long bellhousing studs
Speeedo sending unit
Throttle linkage rod with crescent bend in it
Clutch with ring gear, clutch release fork, flywheel
Torsion bar tube with torsion bars
Suspension spring plates

[eimkeith]

We did a lot of sheetmetal in Teo's because we put a 6-speed in there.

For a 5-speed, get the T-bar housing, the seat pan just above it, the clutch line in the tunnel, and then all the obvious stuff - shifter, transaxle, pedals, linkage, brake booster assy, etc.

or, you can skip the G50 t-bar housing transplant and cut out the center of the T-bar housing and just run coilovers if you reinforce it properly.

[eimkeith]

ooh yeah, Kevin's list is good. (I should bookmark that for quoting the conversion in the future, lol)

[PcarPhil]

Originally Posted by eimkeith

We did a lot of sheetmetal in Teo's because we put a 6-speed in there.

Dohh! Oh yeah...there was that little detail about the 6-speed vs. a 5-speed.

Thanks for the info guys!

P.S. If anyone needs this stuff for a 5-speed G50 conversion I've got it. It's all there - still attached to the donor chassis.

[KTL]

I've got a guy that could be interested in everything except the shifter assembly. We'd use the Hargett shifter instead, to make things much simpler since his car is a full-on dedicated race car.

His other source for the trans & parts seems to have vanished, so i'm keeping my eyes peeled for other stuff!

Thanks,
Kevin

[cstreit]

I'm the guy... Kaefer, I'll contact you off list...

[PcarPhil]

Originally Posted by Kaefer

P.S. If anyone needs this stuff for a 5-speed G50 conversion I've got it. It's all there - still attached to the donor chassis.

I should rephrase this. I have everything minus the G50 trans and flywheel.

[baruch mor]

Originally Posted by eimkeith

We did a lot of sheetmetal in Teo's because we put a 6-speed in there.

For a 5-speed, get the T-bar housing, the seat pan just above it, the clutch line in the tunnel, and then all the obvious stuff - shifter, transaxle, pedals, linkage, brake booster assy, etc.

or, you can skip the G50 t-bar housing transplant and cut out the center of the T-bar housing and just run coilovers if you reinforce it properly.

assuming i have a 76 w/o power brakes and i want to go the easy way - installing the shifter, transaxle, pedals, linkage, brake booster assy, etc. would be enough ? what do u mean by "cut out the center of the T-bar housing and just run coilovers" ? sorry for my english...

[baruch mor]

ok , so i understand that there are 4 option to convert the 915 to g50 :

1. the "factory" option - that involved with what KTL said , to take from a 87 model the following parts :
Complete shifter assembly, shift rod, shift rod coupler
Clutch master cylinder and slave cylinder + hydraulic line plumbing
Pedal cluster to house the clutch master cylinder
Brake fluid reservoir and mounting bracket
Transmission with trans mount and long bellhousing studs
Speeedo sending unit
Throttle linkage rod with crescent bend in it
Clutch with ring gear, clutch release fork, flywheel
Torsion bar tube with torsion bars
Suspension spring plate
and change the torsion bar tube n suspension spring plate witch involved with cutting n welding the frame.

2. the "g50 cut" option - again as what KTL said :u have to shorten bellhousing conversion on the G50 trans and modify the recipient car's trans mount to accept the G50.

3 the coilovers option - just like keith from zuffenhaus racing & fabrication offered : u "just" have to cut out the center of the T-bar housing and "just" run coilovers if you reinforce it properly.

4. the "braces n collars" option - this option taken from Don Istook from ISTOOK'S Motorsports and he offered that You do have to have a torsion tube from an 87-89 911, but you section it. then measure and cut out the old tube, make two steel collars, section the donor tube, position it and weld it in. We then make braces, just like the factory mount has, to supplement the strength to the chassis for the new remade tube. We have a spit that we can rotate the cars 360 degrees, which makes it much easier, but it can certainly be done on floor jacks or with a lift. - here is his post with pics : 2.7 to 3.2 conversion questions


is there any big changes compering the first option to the forth?
is there any big changes compering the second to the third?

in any case i think ill go for the first option as it is easier and cheaper to do from all the options and as KTL said its the 'factory" option allthough option four sound easy but u have to customize things yourself.


for your info - im just a newbie that collected this options from this forum and i maybe didnt understand some of them correctly - please let me know if im wrong

mor

[baruch mor]

Originally Posted by KTL

Depends on how you want to handle the installation into the pre-G50 car. What year is the transplant recipient?

Reason I ask is for brake booster installation, as pre-77 non vaccuum boosted brake cars will need the brake pedal bulkhead and vaccuum booster to put the master cylinder reservoir (for clutch and brakes) in the front trunk if desired.

keith could u explain more about this procedure ? as i have a 76 911. do u have pictures of the conversion?

[group911@aol.co]

Originally Posted by Kaefer

I should rephrase this. I have everything minus the G50 trans and flywheel.

And I have a trans and flywheel if anybody needs it.

[KTL]

Originally Posted by baruch mor

keith could u explain more about this procedure ? as i have a 76 911. do u have pictures of the conversion?

I assume your 76 911 has non-vaccuum boosted brakes, as most 76 cars were without power assisted brakes. I believe this means your brake master cylinder is located in the brake and clutch pedal cluster inside the cabin? If so, that presents a conversion problem for you because of two issues:

1. The 87-89 G50 pedal cluster has no provision to house your brake master cylinder. It contains the G50 clutch master cylinder. See the two pictures below





2. Once you remove your existing pedal cluster, you obviously need a place to put your homeless brake master cylinder! The factory solution is to put it in the front trunk along with the vaccuum booster (power brake assist) and the brake & clutch master cylinder reservoir. The brake master cylinder and vaccuum booster are mounted atop the alloy bulkhead, which is mounted to the trunk floor. See the photos below





The easiest way to do the master cylinder relocation would be to get the complete pedal cluster and booster/bulkhead/master cylinder assembly from a G50 car, along with the necessary brace and brake pedal pushrod. This will ensure everything fits together properly.

[baruch mor]

thanks kevin
so i guess ill have to change the full braking system on my car , right?
is it a difficult project or just a tiny one comparing to the 3.2+g50 conversion?
how many hours will this project take considering i will have all the parts from a 88 car?

[PcarPhil]

If you have access to a complete G50 donor car I'd go as far as to say the G50 conversion isn't terribly difficult, but it is time consuming to cover all the details correctly.

Oh yeah - somewhere on Pelican I've seen a template for grafting in the brake booster.

[baruch mor]

Originally Posted by Kaefer

If you have access to a complete G50 donor car I'd go as far as to say the G50 conversion isn't terribly difficult, but it is time consuming to cover all the details correctly.

Oh yeah - somewhere on Pelican I've seen a template for grafting in the brake booster.

could u please give me a part list i need to get from the "donor car" ?
im located in ISRAEL and the engine n trans r still in florida so i can still
ask for the parts i need. i must have a full part list as im going with the
cut of the torsion bar etc atd plant it in my car (not taking the coilovers n shortening of the g50 option) i think this option will be safer and cheaper
for me.

kaefer did u install the brake booster because of a conversion of g50 or u just wanted power brakes?

[RoninLB]

the G-50 has different gearing than the 915

[PcarPhil]

Originally Posted by baruch mor

could u please give me a part list i need to get from the "donor car" ?
im located in ISRAEL and the engine n trans r still in florida so i can still
ask for the parts i need. i must have a full part list as im going with the
cut of the torsion bar etc atd plant it in my car (not taking the coilovers n shortening of the g50 option) i think this option will be safer and cheaper
for me.

kaefer did u install the brake booster because of a conversion of g50 or u just wanted power brakes?

For the parts list see post #2 in this thread.

I didn't do a G50 conversion in my '77. I do have an '87 parts car that was hit in the left front. Before the chassis gets cut up I wanted to get a list of parts needed for a G50 conversion so I created this thread.

My '77 came with the brake booster from the factory.

By the way...my '87 parts car is still a roller (barely) with basically just the G50 conversion parts left installed on the chassis (brakes, shifter, clutch setup, torsion tube, torsion bars, suspension, etc.) minus the G50 trans itself. If you're interested in it let me know. It would have to be shipped from Virginia and chances are shipping a roller to Israel probably isn't cost efficient. Though you would have everything needed for the G50 conversion...

[PcarPhil]

Hey folks,

If any of you happen to be interested I just posted my "G50 conversion kit" over the parts classifieds:

FS: G50 conversion kit ('87 partial chassis w/ G50 parts) in VA

Thanks,