• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

1150 EF updating project

Blower said:
tk4.jpg
Click to expand...

Holy smoking tires Batman!!!! I forgot how cool this build was. That bike is a true monster, and it looks awesome. Any plans for a side cover of sorts visually connect the tank to the tail?

You do very excellent work. Kudos and keep going!!! :clap:
 
I have had a lot of problems to get the engine running smoothly between 2000 - 3000 rpm and #3 spark plug has been fouled several times (it?s been covered with black soot).
Few days ago I found the reason for the problems. It was the yoshi st1 cams!
I measured every valve and find some strange things. Cylinder #1 and #2 valves opens and closes 11 degrees earlier than #3 and #4. Cyl. #3 exhaust stays 50 degrees more open than others (only 0.016", but anyway).
I?ve got the valve lash set as it was in yoshi specs.
I change to the stock cams and now it runs a lot better, no valve noise and exhaust temperatures between the cylinders are equal. With yoshi cams there was nearly 300 F difference in the exhaust temperatures between #3 and #4.
 
Blower said:
I have had a lot of problems to get the engine running smoothly between 2000 - 3000 rpm and #3 spark plug has been fouled several times (it?s been covered with black soot).
Few days ago I found the reason for the problems. It was the yoshi st1 cams!
I measured every valve and find some strange things. Cylinder #1 and #2 valves opens and closes 11 degrees earlier than #3 and #4. Cyl. #3 exhaust stays 50 degrees more open than others (only 0.016", but anyway).
I?ve got the valve lash set as it was in yoshi specs.
I change to the stock cams and now it runs a lot better, no valve noise and exhaust temperatures between the cylinders are equal. With yoshi cams there was nearly 300 F difference in the exhaust temperatures between #3 and #4.
Click to expand...

Good to hear that you've got it fairly sorted. Strange goings on with those Yoshi cams.

I still think that you'll need to reduce that overlap. Perhaps a set of custom ground cams are now in order!;)
 
49er said:
Good to hear that you've got it fairly sorted. Strange goings on with those Yoshi cams.

I still think that you'll need to reduce that overlap. Perhaps a set of custom ground cams are now in order!;)
Click to expand...

I degree the both cams lobe center lines in 110.
Is it possible to use intake cam in exhaust side (intake cam in both sides)?
 
This thread is a pretty good resume for a job as a bike designer. What do you work with anyway Blower?
 
Blower said:
I degree the both cams lobe center lines in 110.
Is it possible to use intake cam in exhaust side (intake cam in both sides)?
Click to expand...

When running 2 inlet cams, you'll be increasing the exhaust lift, duration,and the overlap too. The only way to avoid excessive overlap would be by extending the slots on the sprockets. However, when you time it to reduce the overlap, you will be potentially robbing something from the power stroke.

The stock inlet cams have 8 degs extra duration than the exhausts have. So you'd be starting the exhaust cycle 8 degs earlier up the power stroke which will further increase as you dial in less overlap.

One positive though, being a supercharged setup, you should still have plenty of valve clearance to cope with the minimal increase in lift.

I'd give it a try, so you can do a comparison and make a more measured judgement about your future cam options.
 
Get the fuel tank from the painter and installed.
I pinstripe some stripes and text to the tank. It?s are my first pinstripes, so the quality
is not so good...
I need to continue the striping, when the paint is dryed.

sc2.jpg


sc1.jpg
 
49er said:
Blower, how did you get on trialling 2 inlet cams?
Click to expand...

Have not done it. I just wondering if anyone had tested it.
I dont have any good inlet cam to make that test.

There have been some good results using two inlet cams in hayabusas.

I have made few test/tuning rides and now it?s better than ewer with supercharger.
I need to take datalogging and then made fine tuning to fuel map.
That smoking problem i wrote earlier is almost gone!
 
Double inlets?

Double inlets?

Okay, a note here. The double inlets work very well. Only, on engines with buckets. The rocker types, as the GS is is having different profiles for the opening and closing ramps. Why? As the geometry of the rocker changes as the position of the lobe changes. A better alternative is just a lreger set of aftermarket cams with more duration. Just because it is supercharged doesn't mean it needs smaller cams. Actually the GS cams were so small even compared to the first generation of the GSXR 750 that they respond nicely to the first or second stage of drop-in cams. More work is required to with more lift that these provide as the retainers hit the valve stem seal.
Hope it helps.
G
 
It has gone a few years since last update. I never tested a inlet cam on exhaust side.
Instead of that I resleeved the cylinder block with GSF1200 liners which are now bored to 80mm = 1327cc.
There are also some other small modifications in the engine and with all those modifications it?s now nearly
powerful enough :)
Last year I was dyno tuning the engine and the final reults were 209 hp and 184 Nm rear wheel power:



I have also done some cosmetical changes for the fuel tank, rear end, etc:

 
I know how much fun on the street i can have with 85 or so horsepower.
Having a documented 209hp to play with must be fantastic.
 
You must log in or register to reply here.

Similar threads

B
The "Scraps Racer" project
6 7 8
Replies
150
Views
14K
wally
W
B
'82 Katana, "the tomato project"
2
Replies
21
Views
2K
GSXR7ED
GSXR7ED
M
New project: EFI and spark using EDIS for my GS1100's
Replies
5
Views
610
ronin1166
R
T
(Re)Introduction/Project Thread 1982 GS 1100 EZ Resto-Mod
Replies
4
Views
371
Turtleface
T
C
Project "Stupidity"
2
Replies
31
Views
4K
Captainkirk
C
Back
Top