Fetus' Rabbit 16v GSXR ITB MS1 V2.2

Post Reply
User avatar
Paul_VR6
Helpful Squirter
Posts: 61
Joined: Thu May 27, 2004 10:14 am
Location: Elkton, MD

Fetus' Rabbit 16v GSXR ITB MS1 V2.2

Post by Paul_VR6 » Tue May 20, 2008 7:00 pm

I've spent the last year, maybe two building this car for someone and it even managed to get sold between when I started and when I finished. I'll post some of the relevant highlights as well as some pics of the fab on the TB's and maybe an msq if I get it off my beater laptop.

Engine specs:

9A block
ABA hg
PL head
GSXR 750tbs with 2" couplers on stock cut lower
TT long downpipe
TT 2.25" exhaust
G60 injectors
1.8T fuel rail
Stock fuel filter
5/8 fuel lines over stock hard lines
Vacuum log for brake booster
Serp conversion
VR6 ignition coil section
Bosch ignition amp
Mk4 VR6 plug wires

MS V2.2 by me
ABA wiring harness, cut up with some things deleted

Image

For the TB's the goal was to not have to weld anything as I didn't want to bother with it or farm it out. To get the throttles to actuate each other when spaced out, I just bent the tabs. It worked out very well once I got them all right.

Image

Image

Image

You can also see the plumbing washers in those pics that I used to space the TB's out from each other to match the manifold.

Here you can see the 2" silicone coupler

Image

Throttle bracket and cable from a Mk3 2L, the bracket is the stock GSXR one just bent a million times to work. Again, no welding:

Image

Some pics of the vacuum log, I tapped the injector holes for 1/8NPT for plugs originally but not having power brakes was a bit scary in this car. I ended up getting some 1/8NPT to 1/4" hose barb fittings to do this:

Image

Image

Here is one of the plugs for the secondary throttle shaft, I believe I tapped it for M10x1.25

Image

Stock transverse 1.8t fuel rail no holding brackets but I used slightly oversized american orings on the lower injector spots so it's pretty wedged in there:

Image

ABF side coolant flange with stock ABA sensor

Image

VR6 coil with no amp:

Image

Decent overall view:

Image

Image

Serp setup, you can see the tps wiring splice into the stock ABA wiring harness as well as the fpr vac line setup:

Image

Stock fuel filter with the big fuel lines:

Image

It sucks in birds, honest:

Image

Temporarily permanent IAT mounting:

Image

Brake booster check valve shoved into booster:

Image

The bucket it's in:

Image

The car is running on MSnS-E 029Y4 with an Innovate LC1 doing full wideband control. This car idles at 38kpa so it's still on Speed-Density, and the first car ITB that I've done where it works alright. I do have to use rpm based accel for it though so it doesn't go too lean jumping to 100kpa at low loads.

For a pretty stock motor it pulls well it'll be better once I throw some cams in there for the owner and he sorts the suspension out a bit more and gets some not crap rubber on it. Filters wouldn't be a bad idea, nor would be longer stacks for it.

All in all it was a fun project to do but took way longer then I ever thought it would. The engine I was supplied was way overheated and the head was warped and had a cracked exhaust valve. Put another one on but by that time I ran into every starter problem known to man, but finally a known good Mk2 unit saved the day. Tuning was cake, probably only about 3hrs into it total, mostly just datalogging and tweaking form the logs. Doing accel by myself was something that I'll never do again, I need a driver. :P

MSQ file will get uplaoded shortly.
-Paul
1995 GTI VR6 12.833@105
2.8l 12v on MS1-3.57/HR10G - retired
3.2l 24v on MS3 - beta test completed - retired
??? on MS3/3x/IOx/? next up...K&P Performance - KPTuned.com

User avatar
Paul_VR6
Helpful Squirter
Posts: 61
Joined: Thu May 27, 2004 10:14 am
Location: Elkton, MD

Re: Fetus' Rabbit 16v GSXR ITB MS1 V2.2

Post by Paul_VR6 » Wed May 21, 2008 11:31 am

MSQ
You do not have the required permissions to view the files attached to this post.
-Paul
1995 GTI VR6 12.833@105
2.8l 12v on MS1-3.57/HR10G - retired
3.2l 24v on MS3 - beta test completed - retired
??? on MS3/3x/IOx/? next up...K&P Performance - KPTuned.com

User avatar
Paul_VR6
Helpful Squirter
Posts: 61
Joined: Thu May 27, 2004 10:14 am
Location: Elkton, MD

Re: Fetus' Rabbit 16v GSXR ITB MS1 V2.2

Post by Paul_VR6 » Fri Sep 26, 2008 4:48 am

Installed Autotech Sport cams and retuned:
You do not have the required permissions to view the files attached to this post.
-Paul
1995 GTI VR6 12.833@105
2.8l 12v on MS1-3.57/HR10G - retired
3.2l 24v on MS3 - beta test completed - retired
??? on MS3/3x/IOx/? next up...K&P Performance - KPTuned.com

User avatar
pluisje
MegaSquirt Newbie
Posts: 10
Joined: Thu Jul 24, 2008 5:26 am
Location: Zwijndrecht, Holland

Re: Fetus' Rabbit 16v GSXR ITB MS1 V2.2

Post by pluisje » Wed Oct 15, 2008 3:19 am

Paul_VR6 wrote:Some pics of the vacuum log, I tapped the injector holes for 1/8NPT for plugs originally but not having power brakes was a bit scary in this car. I ended up getting some 1/8NPT to 1/4" hose barb fittings to do this:

Image
This car idles at 38kpa so it's still on Speed-Density, and the first car ITB that I've done where it works alright.
seems your big power brake 1/4" hose barb will equal the vacuum behind the throttle bodies.

seems you have just 1 big plennum now, with a 4 valve intake..

i would stay on SD, it even works good for me, with a 70kpa on idle

moteleb
MegaSquirt Newbie
Posts: 1
Joined: Sat Nov 19, 2005 11:52 am
Location: Montréal,qc,ca

Re: Fetus' Rabbit 16v GSXR ITB MS1 V2.2

Post by moteleb » Wed Oct 29, 2008 6:46 am

Nice, it's very very close than mine!

Here is the french version of mine. http://www.vwquebec.ca/forum/showthread.php?t=225814 I run my car since 2003. The last winter was to built an ABA-16V
I hope to put that engine in a Rabbit ;)

nepacaddy
MegaSquirt Newbie
Posts: 1
Joined: Wed Jul 17, 2013 8:09 am

Re: Fetus' Rabbit 16v GSXR ITB MS1 V2.2

Post by nepacaddy » Wed Jul 17, 2013 8:38 am

Hey paul i now own this motor got a new harness from diy .now laptop not reading ms and not gettin spark any advice

Post Reply