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ROW S2 931 reliable 300whp How is it done?
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Sunset924  



Joined: 30 May 2017
Posts: 44
Location: PA, USA

PostPosted: Sat Nov 10, 2018 2:47 pm    Post subject: Reply with quote

Awesome project! Just a little input from a former hx35 user: I had this turbo on a 4cyl engine with 1.9l of displacement and I could barely get it to spool before 4.5K... then it would promptly take me right to redline. this turbo was designed primarily for diesel applications with displacements between 5 and 6.5l... I ended up feeding it with a tdo4 (compound setup) but thatís an entirely different story. A street car would certainly benefit from some low end grunt off the line, I think that much lag would take some fun out of it, and no one wants to 2 step this thing off every stop light just to pull out faster than the mini van next to it. I would shop turbos based on compressor maps and see what fits your needs.. albeit itís a big part of your puzzle, but itís not the entire game. Good luck on your quest!
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michel  



Joined: 25 Feb 2018
Posts: 14
Location: Australia

PostPosted: Thu Jan 23, 2020 3:34 pm    Post subject: Reply with quote

Just a bump for an interesting project

Any progress ? I have a cgt rep built on an n/a that Iím looking to repower.

Re: CIS I will replace my WUR with the DKUBUS Ewur.

https://dkubus.com/?product=frankencis-e-wur-basic

Fitting one to my 932 as well
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931 stock, 1 of 130. Frankencis conversion in progress

Carrera GT wannabe , currently seeking parts
944 Turbo
924 turbo (for sale)
924 martini (for sale)
75 911 narrow body IROC project
914/6 GT project
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Fasteddie313  



Joined: 29 Sep 2013
Posts: 1927
Location: MI

PostPosted: Fri Jan 24, 2020 1:21 pm    Post subject: Reply with quote

michel wrote:

Re: CIS I will replace my WUR with the DKUBUS Ewur.

https://dkubus.com/?product=frankencis-e-wur-basic

Fitting one to my 932 as well




I'm running FrankenCIS too but I replaced my fuel distributor with a CIS-e V8 unit and am running no WUR..

It has been working pretty good for me.. It works and tunes pretty well..

My main thread on it here with some logs and kindof my progress reports..
http://924board.org/viewtopic.php?t=42444&start=195
Feel free to ask me any questions you want and will probably find them easier in there..


Video in my signature..
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80 Turbo - Slightly Modified
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Carrera RSR  



Joined: 08 Jan 2010
Posts: 1973
Location: Somerset, UK

PostPosted: Fri Jan 24, 2020 5:36 pm    Post subject: Reply with quote

If I were starting again with my car, Iíd buy a crate GTS motor and all GTS spec ancillaries from Mittelmotor. Their race GTS makes 395 bhp on stock GTS spec CIS and K26 #6 with modified compressor side. Itís pretty quick in FIA historic racing only being beaten by 935ís. They can sell all parts and build cars from scratch. Their GTR build is pretty impressive too.
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1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252
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Fasteddie313  



Joined: 29 Sep 2013
Posts: 1927
Location: MI

PostPosted: Sat Jan 25, 2020 6:00 am    Post subject: Reply with quote

iirc the GTS injection system is a 928 FD and all off-the-shelf CIS parts from Bosch, other than the custom fuel lines, mounts, air filter box, etc..
Injectors are standard 931 injectors..

I would consider a CIS-e V8 fuel distributor on FCIS superior to the old WUR based CIS of the original GTS/928..

I don't have any idea what a GTS crate engine and all ancillary components must cost, but at that point I would be more likely looking at a catalog of Chevrolet crate engines..
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80 Turbo - Slightly Modified
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