GS Turbo

[Anonymous]

It's fairly simple to do. Run the GSXR cams on the GS cam sprockets. Plug the oil drain holes in the fromt of the head. Use a Top end oiler kit. Loose the idler gear on the GSXR head. Some people run drain hoses and tap them into the top case on the front of the motor. You will see a HUGE power difference. A stock oilcooled GSXR head flows what a mildly ported GS will flow. A 1260cc kit with a street/strip ported head with G21 cams made 186 RWHP on a GS1100 Streetbike. And was ridden on the street.

[Anonymous]

GSXR cams

Hello Mr T
can u plz elaborate more on ur GSXR cams in a 81 GS1100 head I have a 81 gs 1100 and was thinking about adding cams, any info is aprreciated.
Regards, Archie

[Anonymous]

That would be GS cam sprockets on the GSXR cams in the GSXR head. If you have a mild motor set up and would like a good mid and upper RPM power boost go with a set of the G3 cams for the 1100/1150. It is the largest cam you can use with stock valve guides. But a nice set of GS1150 cams is good also in the 1100.

[Anonymous]

umm turbos...

checkout my latest...
the crate arrived Saturday, been holding it every since....

[lecroy]

On my screen it almost looks like it has a gold plateing on it. I would keep that one for my dinner table center piece.

[lecroy]

This years setup, unless I make the switch.

[Nerobro]

Yaknow, I almost convinced myself I should turbocharge a GS.

I dislike the idea of runnign draw through. Something about not having an intercooler bothers me a bit. However... blow through is a royal pain in the butt with carburators. And unless your'e really good, it can lead to all kinds of carburation wierdness.

Now I know a guy on gstwin is running a blow through setup on a GS500E. (I think he's putting out almost a hundered horsepower...) has anyone here done a blow through setup?

OH and the most important bits. What fuel pump would be a good idea? And will a "normal" GS oil pump provide enough pressure for a turbocharger?

[Nerobro]

http://www.gstwins.com/forum/viewtopic.php?t=6380&highlight=turbocharger

Check out the thread..

[lecroy]

I don't understand why you think a draw system could not be intercooled. Too much pumbing? Worried about making a bomb? The backfire may have a new meaning. Worried about the fuel wetting on the intercooler?

I give some math on my site showing how I calculated the fuel pump size, top of page:

http://dickey.intell-a-sys.com/fuel.html

For gasoline, you may be able to still gravity feed it, depending on the HP and carb. type.

[marcovandevelde]

Hi Nerobro,
Why do you think blowthrough carbs are a pain in the butt?
Many guys have done this with succes, including me. The catch is at the pressurising of the floatbowls; you need a dynamic boost that is taken off directly into the airstream that comes from the turbo. This way you have a ''ram-air'' pressurising which has a teensy bit more pressure than the carb bodies get, and 9 times out of 10 you will be able to stick with your standard needles & jets, running it slightly rich! You need to replace your floatneedles with new ones too, because they often leak on the 4 psi fuel overpressure.
On the fuelpump, regulator etc. : Take the easy route and use stuff that comes off of a Yammi turboseca. I do the same on my GS1168 and it works fine, even on this bigger motor. Use the seca turbounit too if you can get your hands on one, or use one off a honda CX turbo.

I think the GS500 uses slide bearings on the cranck instead of my Gs1100's ball bearings and that means you would have sufficient oilpressure to feed the turbo. I'm not sure, measure oilpressure on the std. engine to be sure.

Lecroy, that is one IMPRESSIVE unit you've got there! Good thing about the drawthrough I think is that it looks brutal, with the carb sticking out and the small dumppipe down the side. Good ground clearance too.

Busafied, if ''only'' I had the money!...

Good luck, Marco.

[Anonymous]

Nice drawthrough setup, but like marco said, it has been overcome and the info on how is readily available now.

So for mine I am hoping for blowthrough about this time next yr.

Marco I got a screaming deal on the turbo, could NOT pass it up.
The gold look is the reflection off the ceiling fan globes...
Did not use flash..

but here's a shot of the stuff laying around this room...

the big one in the middle is the gold tinted one a few posts back..



Peace,
Ron

[lecroy]

..it has been overcome and the info on how is readily available now.

LOL!! Well, it's 20 years old and so is the bike!!

Four turbos?? What are you trying to do?? Put a turbo on everything you own with a motor???

[Anonymous]

LeCroy it wasn't a jab..

I know how old the bikes are I have one too remember?

I was just saying the blowthrough pressure issues have been overcome.

as far as the turbos yea I have alot more then those, and yes I am probably going to do all the other bikes also.

Boost is addictive ya know?!
8)

Now to more important stuff...

can someone fix my log-in LMMFAO!

[marcovandevelde]

Hi Busafied Ron,
Quite a collection. You can turbo just about anything from your lawn-mower to the busa if so you'd want. That's one of those ball-bearing, oil-feedless VNT turbos isn't it? I'm running a Garrett VNT with good result. Have to have it dynoed though. Too busy ridin' it.
Had a look at your Busa-wars site too. Great! Does your busa already run with the turbo? Nice lookin' plenum, home made? Shame about the log header though, you need to build a ''proper'' one when you can. Guess you choose this one to be able to gravity-return the turbo-oil, no? If you run the aerodyne, you don't need to worry about that.

Hi Lecroy,
I had a look at your site too, with the fuel calculations, but this is something that I will need to study on before understanding. Thanks for sharing!

Greetz, Marco.

[Nerobro]

Hi Nerobro,
Why do you think blowthrough carbs are a pain in the butt?
Many guys have done this with succes, including me. The catch is at the pressurising of the floatbowls; you need a dynamic boost that is taken off directly into the airstream that comes from the turbo. This way you have a ''ram-air'' pressurising which has a teensy bit more pressure than the carb bodies get, and 9 times out of 10 you will be able to stick with your standard needles & jets, running it slightly rich! You need to replace your floatneedles with new ones too, because they often leak on the 4 psi fuel overpressure.

Well carburators are dependant on seeing constant density air to keep the air mix proper. If you run air that's twice as dense (say, twice the psia) you won't get twice the fuel out of the carburator.

I like your trick of overpressurizing the float bowls.

I know it's been done sucessfully.... But the question is if drivabilty is retained. The guy who did the GS500 has mid throttle troubble.