How many 911 3.6 conversions out there ?

[chucksmith]

80SC widebody, 3.6VRAM with 915, full Griffiths AC set up

[Ryan_Cunningham]

Originally Posted by chucksmith

80SC widebody, 3.6VRAM with 915, full Griffiths AC set up

Looks great.

This thread is killing me. We started my 3.6 swap Wednesday, but when installing the LSD we made the decision to do a bit of work on the transmission which we won’t get back until Tuesday.

[Bill Verburg]

Originally Posted by Ryan_Cunningham

Looks great.

This thread is killing me. We started my 3.6 swap Wednesday, but when installing the LSD we made the decision to do a bit of work on the transmission which we won’t get back until Tuesday.

Just a heads up, I see that you are using the 993-engine mount cross bar, console and tin. This requires a 3/4 spacer which will drop the rear of the engine and lead to issues w/ exhaust appearance and ground clearance.

I'd highly recommend using a 3.3 console, regular 911 or RSR type 911 cross bar and Sheriden 3.6 conversion f/g to replace the tin. You do need to use a single or double sheave crank pully as well.

W/ the 3.2 parrts the engine and exhaust sit exactly as in any other 911.

[Ryan_Cunningham]

Originally Posted by Bill Verburg

Just a heads up, I see that you are using the 993-engine mount cross bar, console and tin. This requires a 3/4 spacer which will drop the rear of the engine and lead to issues w/ exhaust appearance and ground clearance.

I'd highly recommend using a 3.3 console, regular 911 or RSR type 911 cross bar and Sheriden 3.6 conversion f/g to replace the tin. You do need to use a single or double sheave crank pully as well.

W/ the 3.2 parrts the engine and exhaust sit exactly as in any other 911.

Thank you for the guidance Bill. I was aware I'd have to lower the engine by about 25mm. I purchased the PMS 3.6 conversion to early 911 tin, that is what we installed yesterday. That won't work?

I have a spare RSR crossmember sitting in my garage and we have the single pulley conversion waiting installation once we get the front and aft pulley adapter. Timmons told me the RSR crossmember wouldn't work when I ordered the kit from him.

Do you think this exhaust will have clearance issues?

https://werksperformance.com/products/copy-of-porsche-993-carrera-rsr-header-muffler-kit-with-heat-dual-inlet-outlet-muffler-copy-of-993-rsrwh

I'm also starting to have concerns regarding the 915 being able to handle 285-300 rwhp despite us fixing any issues with the transmission. I'm not going to hammer on it, but with and OS Giken LSD and rebuilt 915 it should be fine for several years without service...? What are your thoughts Bill?

[arrivederci]

On the subject of engine mounts, notice that the one in Bill's picture is reinforced at the ends. This is a great idea...those things twist quite a bit.

For transmission durability, I guess it depends how you treat it. I too heard people cautioning me about the 915 but I haven't had an issue nor do I know anyone with a 3.6L that has grenaded their 915. I did go with an '84 euro 915 (not my stock magnesium cased one) and I didn't add an LSD hoping to stress the transmission a little less, maybe having a little wheelspin here or there on one wheel. 911s get such great traction anyhow and I don't track this car, so the lack of LSD is hardly noticeable.

[Bill Verburg]

Originally Posted by Ryan_Cunningham

Thank you for the guidance Bill. I was aware I'd have to lower the engine by about 25mm. I purchased the PMS 3.6 conversion to early 911 tin, that is what we installed yesterday. That won't work?

I have a spare RSR crossmember sitting in my garage and we have the single pulley conversion waiting installation once we get the front and aft pulley adapter. Timmons told me the RSR crossmember wouldn't work when I ordered the kit from him.

Do you think this exhaust will have clearance issues?

https://werksperformance.com/products/copy-of-porsche-993-carrera-rsr-header-muffler-kit-with-heat-dual-inlet-outlet-muffler-copy-of-993-rsrwh

I'm also starting to have concerns regarding the 915 being able to handle 285-300 rwhp despite us fixing any issues with the transmission. I'm not going to hammer on it, but with and OS Giken LSD and rebuilt 915 it should be fine for several years without service...? What are your thoughts Bill?

The 993 console, crossbar and modified tin work but force the rear of the engine down over 1 1/4" due to the height of the tin




the 3.2 parts w/ Sheriden f/g tin replacement fits like a glove and returns the engine to it's usual position




That exhaust looks exactly like the one I bought from Fabspeed, and I do mean exactly. If so it's great, best I've ever heard including the ones I've used on my 993.

Only nit is that the tips are a little weal, appearance wise

[Duc Hunter]

1975 911S steel wide body, front fenders 1” wider each than 930 fenders, 915 gear box, 1993 964 3.6, Rothsport headers with GT3 muffler a-la Guntherwerks….. just finishing rust repair and paint after driving her as a black and white rat rod for 10 years. Build thread coming soon???

how it started in 2016...



How it was going (DRT2022)....



Almost back on the road now....

[ToySnakePMC]

Love the blue finish & chrome trim. Good job!!
Patrick

[Duc Hunter]

Originally Posted by ToySnakePMC

Love the blue finish & chrome trim. Good job!!
Patrick

Thank you kind sir.

[jimtweet]

[AlBackus36]

Bill,

I have a timmons'/IG style 3.6VR swap in an '87. It is freaking tight on the top.

Have you fit a 3.6 varioram with the 3.3 console, 3.2 bar, and sheridan tin? I'm not actually sure the engine could go up another inch with the ICV already pressed against the insulation.

I know you're familiar and will echo that if you do nothing, your exhaust will be lower than normal. I scrape when driving hard and have a passenger in the car. I'm pretty low though.

Another observation: There is some slight angularity at the transmission mount, but it's in the opposite direction you'd expect. It is tilted with the forward end down, indicating the engine is actually higher than the trans... I'll see if I can snap a pictures of this. Maybe my memory is off because this would be unusual.

I'm fascinated by this swap now. It feels like it's not quite fully understood.



PS: Not sure if photo is working as imgur is blocked at work. The little spouts are header dumps. One is unfortunately aimed a little downward.

[chucksmith]

this is how my exhaust sits with my Timmons VRAM set up . It is tucked in nicely, it is a tight fit at the top of the VRAM intake though.

[chucksmith]

[AlBackus36]

Thanks for the extra pics, Chuck.

I want to clarify the car is more than drivable. Ryan, don't think it won't be usable. I drive the car hard and it doesn't get in the way. If I have someone in shotgun I have to be extra careful over speed bumps or driveways. That's mostly it.

[Ryan_Cunningham]

Originally Posted by AlBackus36

Thanks for the extra pics, Chuck.

I want to clarify the car is more than drivable. Ryan, don't think it won't be usable. I drive the car hard and it doesn't get in the way. If I have someone in shotgun I have to be extra careful over speed bumps or driveways. That's mostly it.

Awesome. The exhaust I posted was actually old - It is the Fabspeed RSR. The owner apologized and gave me $1,000 off. Still a pricey piece of kit but sounds amazing from the clips I've heard.

[Racerbvd]

How cool would it be to have one of these in a G Bobby?

[AlBackus36]

Good, I just didn't want to spook you away from your current path. There are hundreds of cars out there that have been done with the 3.6 console, etc.

I'm convinced the Varioram guys can't go higher, but would love to be proved wrong so I can raise my exhaust

[Bill Verburg]

You'll either need to make room at the top or fab custom I/O pipes at the bottom

Take your pick

[Duc Hunter]

Originally Posted by Bill Verburg

You'll either need to make room at the top or fab custom I/O pipes at the bottom

Take your pick

First wont you need to hit the lottery? I know a Rothsport 3.6 that makes 100HP/liter is at least $40k....plus your running engine. Byron's engine....double that for normal people? I'm out. LOL

[plexiform]

Any color is fine as long as it’s black/black.

Good to see so many fellow nutjobs who have spent a lifetime and small (sometimes not so small) fortune putting together their own personal versions of pure 3.6L German automotive bliss. Has been a fun and sometimes challenging 12 years for me. But this one is finally a masterpiece IMHO. Is the finished product everything I’d hoped it would be…yes. Would I do it again….no. My advice to anyone about to start down this path: if you’re not a mechanic and will be outsourcing the work, just buy a completed project and pay the premium for a properly sorted example.


75 911S
Steel 930 fenders
5spd 915 transmission w/ wavetrack LSD
93 964 3.6L motor with Rasant Products GT3 intake w/ stock internals
Motec engine management
REVV short shifter
Raised shift tunnel by Rebel Racing
North Hollywood Speedo gauges with LED lighting
Getty Design clear carbon hood
Rennline carbon hood and decklid 356 style struts
Fikse Fuchs (like the first Singer models) 17x9/11
Nitto 315/235
Sport comfort seats refinished in perforated leather
Roll cage (ready for the track but never been to the track)
Fiberglass rear early Turbo decklid
Rebel Racing brembo adapters for big red brake kit from 996
Rebel racing adapters for Bilstein coil overs
Rebel Racing 917 style aluminum accelerator pedal
Rebel Racing semi solid engine mounts
Custom suede headliner
Leather covered RS style door cards and all dash parts
New red seat belts
Customs keys by Formawerx
Cibie rally lights
Bosch fog lights
LED bulbs in the H4 headlights.
Rasant Products rear tail lights (LED),
Rasant Products brushed aluminum dash
Stereo delete
Carbon fiber RS style heat duct
Momo 6c prototipo steering wheel
Billy Boat exhaust with heat exchangers
A/C delete
Windshield wiper fluid pump delete but wipers work
Wet weight 2499 pounds
RWHP 301 on the dyno