1978 GS1000 Complete Engine Overhaul With Mods

[Hoomgar]

Hear that Mark?! When you finally do get your project completed, after all the time, money and frustration is over and you're actually riding the bike for the first time, you're gonna get sued! 8O Ain't life grand?! :lol:

They have to catch me first :lol: maybe this new paint scheme isn't such a good idea after all 8O

buddy hasn't started my motor yet....ahahahahah

Maybe you will win after all..........don't forget the 12.9 hardened allen bolts for your starter clutch.......while it is apart.

The bottom end has been completed since Dec 03. I'll ask Joe but I think he may have already done that. He is an old school jap bike mechanic and knows about all the ups and downs that they all had. First thing he did when I bought it was replace the electrical system and put electronic ignition in it. Several other things over the years. I have to admit that I am enjoying this all more than I thought I would. Being younger I wouldn't have had the patience. Now being older and burned out makes it no big deal :lol:

hey hoomgar,

I visited when I was logged out and saw you have a slide show avatar going....nice.

Thx man I had that up for a while. It's a pic of my bike in it's new paint scheme and the other pic that shows how the fairing will look. Before this one I had the GS1200SS up in an animated gif too. Let me know if you want one. Just send me two pics you want and I'll make you one.

 

[Guest]

you may want to have a look at this??

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=35583&item=2495511003&rd=1

 

[Guest]

and this....parting out turbo.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=35594&item=2496953843&rd=1

 

[Hoomgar]

Thx Rob. I actually have had a couple auctions from the second one you
listed in my view already. That bike is badly weathered. I really only am
going to need new pin stripes/labels for my Turbo. The bike appears to be
in really good shape otherwise.

My engine builder for my GS has fallen off radar again. That means he is
busy. I am trying to get an update plus I want to change my sprocket order.
I am going with the 16/45 tooth layout for my 530 conversion now.

 

[Hoomgar]

Well I got to see my engine last Friday because I was on vacation so I did the old surprise drop in

It was neat looking at the clean bored cylinder walls with the cross-cut boring done on them sitting next to the shinny new pistons.

As I said before we are going to raise compression a bit and go with a slightly larger lobe cam setup. My question to you gurus is this:

What cam should I go with and where do I look? I am not against buying a used set of cams if I can be sure they are good but will probably buy new to be safe if I can afford it. What we want to do is go up just a bit. I am not looking to make a drag bike out of it as I want it to remain completely streetable and reliable. But I want to take it up a notch to squeeze a little more stomp out of it. What am I looking for guys? What cams that is?

Any and all info is greatly appreciated!

 

[robinjo]

Why not have your old cams reground?

 

[Hoomgar]

Why not have your old cams reground?

Can I do that? I mean, I know they can be ground but we are looking for larger lobes I thought? If you do this then do you just use larger shims?

I kind of want to keep my stock cams as I have been keeping all the old stock parts as we go. So far everything we have modified I have replaced to do so and I still have all of the stock parts. I kind of want to keep with that. I guess I am sort of looking for a racing cam then right?

See I have no idea what to look for even. Once I do I can do a little research for myself.

 

[first timer]

hey homie you can check out these guys, our bike is on page 53 (the gs 1000) i have talked to them before and they were very nice and very helpful. good luck

http://www.megacyclecams.com/
and
http://www.megacyclecams.com/catalog/catalog.pdf
page 53

let me know what you find out.

-ryan

 

[saaz]

I had my cams reprofiled by the bloke who ported the head. Original is 8mm inlet 7.5mm ex lift, mine are 9.8mm for both with different profile. Use better valve springs tho! I still run standard valves in the ported head. Anything more radical will mean a lot more work, and less streetable.

Be warned that these cams will sound louder as they will lack the sound deadening ramp in the cam profile. Also you will likely have to change all the shims to get the right clearance.

 

[first timer]

here is a good read about a mean gs1000 let see how yours stacks up

http://www.supershowevents.com/magazine/articles/fb2.html

carry on homie.

-ryan

 

[saaz]

Yes, better hurry...I will start on my GS next year in winter...it is lovely warmer weather here.....

 

[Hoomgar]

Thanks guys. I am looking into this.
My problem is I don't have proper time
right now to do the research needed.

I was hoping for the easy answer

 

[Anonymous]

You may want to try a set of cas from a 77-79 GS 750. Little more low end snap.

 

[Guest]

CHIN UP BUBBA!
It's never really over....lol

 

[Hoomgar]

I'm letting Joe pick them out. He knows what he needs and what is best for that engine. I'm lost so I give in.

I have some pics of the bore if I would ever find time to get around to posting them.

 

[RacingJake]

Well Mark, when you get your bike running you'll probably get bored and want to start another project. So you might as well start looking. :lol: :lol:

I just love winter, that's when I do something special to my bike.

Jake

 

[Guest]

Hey Mark,

We have heard it all before but my engine guy says by weeks end it will be together??????

A man can dream can't he...hehehehe

 

[Hoomgar]

Well Mark, when you get your bike running you'll probably get bored and want to start another project. So you might as well start looking. :lol: :lol:

I just love winter, that's when I do something special to my bike.

Jake

I already have Jake

Check it! 1982 Yamaha XJ650LJ Seca Turbo <-- click here

Hey Mark,

We have heard it all before but my engine guy says by weeks end it will be together??????

A man can dream can't he...hehehehe

Remember Rob, I put mine back on the bench for another winter now. No more waiting to get it done 8)

I sure hope he comes through for you. I think we all need to get our own machine shops :lol:

 

[RacingJake]

We have heard it all before but my engine guy says by weeks end it will be together??????

True story-- A friend was going to replace his 302 for a 351 is his Mustang. He give's me the 302 engine go get it out of his hair. So I rebuilt it with all my go fast parts I had laying around (less than 600 bucks) and put it in my Falcon in a few months.

As for the 351 he has this local racing dude that is suppose to be #1 with 351's. Well 1 year and a couple thousands later he finally get his motor back and it's in the Mustang. The only problem is my Falcon is faster than his Mustang on the street and at the track.

He go's on to say that he should of kept the 302 and let me build it for him and I say your should had. I've been putting 302's in Pinto's for years and now how to make them tick.

Sad part is something let loose in his engine about 6 months later.
I think it's always best to put it together yourself.

 

[Guest]

true enough jake,

I know this guy though and some of the racers he has built engines for. super bike motors and they swear by him for dependability and power. One guy has his own shop but has his engines built by this dude. He is also building what he hopes to be a the Canadian record holder for a street bike. He is an active drag racer and has a very nice bike shop. Does a lot of work on Ducati's even though the local Duc dealer is close by. he is the man to see.

In his defense...It is parts from the U.S. that have been holding us up. I still haven't got my second clutch back with the right gear on it so there hasn't been a rush. Parts are the hold up.