Author Topic: my 1991 R5 GT Turbo  (Read 47514 times)

5teve L

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Re: my 1991 R5 GT Turbo
« Reply #120 on: 13:36, Sat 03 September 2011 »
Pulsar wheel is HUGE mate, will it spool ok?
I'm having a similar wheel in my new turbo for the 19 turbo... My turbo is a journal bearing version of the 2871.

bluntyr5gtt

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Re: my 1991 R5 GT Turbo
« Reply #121 on: 15:19, Sat 03 September 2011 »
this is what we will find out matey ;), my turbo builder reckons 300-500rpm more lag at the most

T28/t2.63 (cossie comp housing,t28 comp wheel,t28 shaft/turbine)@23psi
ported head
cat cams 285 cam,springs and vernier
bjr downpipe/elbow
turbo back 2.5" bore longlife system
tubular manifold
fully rejetted carb
Ramair Induction Kit
cosworth 2wd Intercooler
Lowered 50mm
 

bluntyr5gtt

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Re: my 1991 R5 GT Turbo
« Reply #122 on: 06:47, Sun 25 September 2011 »
well after a few delays we finally fitted my new turbo on friday, and my god what a difference its made, the car was quick before but now its in a total different league it actually took me by surprise on how quick it was eg spinning the wheels in 3rd in the dry . Only gained around 200rpm lag which i am impressed with seeing as iv gone from a t2 turbine in the .63 t2 housing up to a t28 turbine and shaft.
so its now all systems go for next months dyno day at wgt cant wait to see how it goes

T28/t2.63 (cossie comp housing,t28 comp wheel,t28 shaft/turbine)@23psi
ported head
cat cams 285 cam,springs and vernier
bjr downpipe/elbow
turbo back 2.5" bore longlife system
tubular manifold
fully rejetted carb
Ramair Induction Kit
cosworth 2wd Intercooler
Lowered 50mm
 

bluntyr5gtt

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Re: my 1991 R5 GT Turbo
« Reply #123 on: 17:20, Wed 02 November 2011 »
bloody hell guys i aint updated on here for ages well lets start with a few pics

these were taken after a bit of a cleaning session finished with poorboys blackhole glaze and dodo juice supernatural hybrid (not the best of pics)





finally had my car on the dyno, was tested on wgt hub dyno at the day i organised :)





here is a link to my youtube dyno run video
http://www.youtube.com/watch?v=LqEF1nSjJak

and heres the graph


the old lines you see are my old 178bhp set up, best thing is my fuelling was mega rich 10.8afr full boost so there is a few more ponies be had just by leaning carb out

T28/t2.63 (cossie comp housing,t28 comp wheel,t28 shaft/turbine)@23psi
ported head
cat cams 285 cam,springs and vernier
bjr downpipe/elbow
turbo back 2.5" bore longlife system
tubular manifold
fully rejetted carb
Ramair Induction Kit
cosworth 2wd Intercooler
Lowered 50mm
 

scratcher

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Re: my 1991 R5 GT Turbo
« Reply #124 on: 19:20, Wed 02 November 2011 »
The car's looking fresh dude  8)  I've been resisting the Supernatural Hybrid, how is it?

Making good power there as well. What's next on the list?

Ash-Lee

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Re: my 1991 R5 GT Turbo
« Reply #125 on: 23:02, Wed 02 November 2011 »
Clean and quick!  8)

bluntyr5gtt

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Re: my 1991 R5 GT Turbo
« Reply #126 on: 06:15, Thu 03 November 2011 »
cheers for the comments guys :)

the supernatural hybrid is brilliant and is much better than the ag hd wax that i used to use.

next on the list is group a exhaust valves, fit this big jim racing downpipe/elbow and get a full 2.5" system made up. obviously going to lean the fuelling out a bit which should see it run around 240bhp at same boost level (24psi)
EFI is also a very strong possibility :)

also going to be doing a bit of restoration on the bodywork new bonnet,drivers door and then tidy up any bits that need it

T28/t2.63 (cossie comp housing,t28 comp wheel,t28 shaft/turbine)@23psi
ported head
cat cams 285 cam,springs and vernier
bjr downpipe/elbow
turbo back 2.5" bore longlife system
tubular manifold
fully rejetted carb
Ramair Induction Kit
cosworth 2wd Intercooler
Lowered 50mm
 

bluntyr5gtt

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Re: my 1991 R5 GT Turbo
« Reply #127 on: 14:29, Thu 10 November 2011 »
my big jim racing downpipe/elbow thats going to be fitted over winter with the new full 2.5" exhaust system and enlarged exhaust valves should help get them gasses out quicker and aid a tad with spool up.




efi is on the shelf but all is not lost as the car is 100% getting mappable ignition which will do away with the pretty dated and limited aei unit. been speaking to a fella who has done this conversion on his 5gtt and he reports a gain of 30bhp in the 2-3k range which for me would be brilliant as my turbo doesnt hit full boost until 4.2k.

T28/t2.63 (cossie comp housing,t28 comp wheel,t28 shaft/turbine)@23psi
ported head
cat cams 285 cam,springs and vernier
bjr downpipe/elbow
turbo back 2.5" bore longlife system
tubular manifold
fully rejetted carb
Ramair Induction Kit
cosworth 2wd Intercooler
Lowered 50mm
 

dj_craig_

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Re: my 1991 R5 GT Turbo
« Reply #128 on: 17:14, Thu 10 November 2011 »
Very nice 5 this! Wish I had the knowledge-mods you have for my mine, your spec makes me jealous  :lol:  good work mate.

bluntyr5gtt

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Re: my 1991 R5 GT Turbo
« Reply #129 on: 17:16, Thu 10 November 2011 »
haha cheers pal, its just been an ongoing thing there hasnt been a plan as such it just keeps evolving ;)

T28/t2.63 (cossie comp housing,t28 comp wheel,t28 shaft/turbine)@23psi
ported head
cat cams 285 cam,springs and vernier
bjr downpipe/elbow
turbo back 2.5" bore longlife system
tubular manifold
fully rejetted carb
Ramair Induction Kit
cosworth 2wd Intercooler
Lowered 50mm
 

robx1r

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Re: my 1991 R5 GT Turbo
« Reply #130 on: 04:46, Mon 21 November 2011 »
where did you get the down pipe? and what ignition system where you looking at?

bluntyr5gtt

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Re: my 1991 R5 GT Turbo
« Reply #131 on: 05:21, Tue 23 October 2012 »
bloody hell its been a long time since i updated on here, just like to add that i got the full 2.5" bore longlife system fitted along with the bjr downpipe back in january, oh and i also have refitted oe headlights.

The car has then been sorn since feb due to finding alot of the dreaded tin worm underneath, work finally started on my car a couple of weeks ago, we have started on the supposed better side first.

anyway enough babble heres some pics
















































T28/t2.63 (cossie comp housing,t28 comp wheel,t28 shaft/turbine)@23psi
ported head
cat cams 285 cam,springs and vernier
bjr downpipe/elbow
turbo back 2.5" bore longlife system
tubular manifold
fully rejetted carb
Ramair Induction Kit
cosworth 2wd Intercooler
Lowered 50mm
 

bluntyr5gtt

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Re: my 1991 R5 GT Turbo
« Reply #132 on: 05:26, Tue 23 October 2012 »
as you can see the supposed better side was not that good at all :( but all is being sorted

we have then got to do drivers side which is a massive job as virtually all floor pan that side has gone as well as sills, rear bumper mounts need doing also. had to get a new bonnet as mine was fecked and also new drivers door.

iv got a load of goodies to go on the car including braided brake hoses, polished cupro/nickel brake lines, ktr jr air filter,door cards are being flocked and a set of ds2000 brake pads all round.

T28/t2.63 (cossie comp housing,t28 comp wheel,t28 shaft/turbine)@23psi
ported head
cat cams 285 cam,springs and vernier
bjr downpipe/elbow
turbo back 2.5" bore longlife system
tubular manifold
fully rejetted carb
Ramair Induction Kit
cosworth 2wd Intercooler
Lowered 50mm
 

5teve L

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Re: my 1991 R5 GT Turbo
« Reply #133 on: 08:55, Tue 23 October 2012 »
Andy, I'm really pleased you stuck with her, she will be mint when you've finished.
I still get the urge to buy another, I just don't have the time or health these days due to my back being fooked to be lying under a car welding or fixing things :(

bluntyr5gtt

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Re: my 1991 R5 GT Turbo
« Reply #134 on: 09:42, Tue 23 October 2012 »
cheers steve should be great when done, going cost me a small fortune even at mates rates :(

shame you cant get another pal iv still got an old mag with your old r5 in there.

got a few more pics earlier (good job i bought rear bumper panels)








T28/t2.63 (cossie comp housing,t28 comp wheel,t28 shaft/turbine)@23psi
ported head
cat cams 285 cam,springs and vernier
bjr downpipe/elbow
turbo back 2.5" bore longlife system
tubular manifold
fully rejetted carb
Ramair Induction Kit
cosworth 2wd Intercooler
Lowered 50mm