Another top end rebuild thread

[greg78gs750]

oooo....kay.....so, things have taken longer than expected. No surprise there. Anyway, head is back from Terry (headsbikesmopars), flow test shows 93.3 cfm at .300 lift; I will be running 1150 cams which have .315 lift, or therabouts. So "about" 15-20% increase in flow. Yum.

Carbs are currently in california with Bill (chef1366) for a clean/rejet/repaint. I realized that my life (3 kids, wife, full time employment, etc.) was just more than my moto-wrenching could handle, so I outsourced. Anyway.....

New rings: Installed. Still need to hone/deglaze my cylinders courtesy of the flex-hone I borrowed from loud-et (THANKS!!!! This forum is a beautiful place, really...)

Head and cylinders have a fresh coat of paint. They look FRICKING TERRIFIC. I will try to post pics, but I lack high-speed access and a smart(?)phone, so don't keep your hopes up....
However, knowing how you all love dem pics, I will try to press a few buttons (such a hassle, I would rather dig up septic tanks, as I did this morning....) and oblige, at some point.

By the time I am done, I think I will have a rather tasty GS.




Anyway, the main question, after this unjustifiably long, pictureless post......

Does the cam chain guide retaining screw get loctite?

Also, the 3-piece piston oil rings, do they get staggered?

Thanks, Hopefully I will have some more frequent/interesting updates in the near future.......

Carry on.

Greg

[greg78gs750]

Managed to get two pistons into the cylinders. Proceeded to tear the base gasket. MOTHERF@#$ER. Ah well, I learned some things. Progress continues.

[john wiggs]

I would like a copy if you don't mind. Wiggs313@comcast.net thanks in advance. I'm doing a top end rebuild myself. About to start another thread on head bolts coming out of the case.

[greg78gs750]

cylinders (easy peasy once you do it 4 times in a row...) and head are on and torqued, 1150 cams go in tonight and the degreeing process can get figured out. Carbs are with chef, should be done and headed back any minute now. Getting closer.....

[greg78gs750]

Oh, a question, any objections to me using the dino rotella as my break-in oil?

[JTGS850GL]

Rotella Dino should work just fine for break-in.

[greg78gs750]

posting for archival purposes, cams degreed to 105/107. learning experience for sure.

[greg78gs750]

Ok, getting closer. To recap:

Top end rebuild. Head work done by Terry (headsbikesmopars), 1150 intake valves installed, radius valve job, head flows about 94 cfm @ .310. 1150 cams degreed to 105/107. Valve clearances set. Manual cam chain tensioner. Bores honed with new rings. Head and base gaskets, head is torqued to spec. New stator to compliment the existing sh-775. New oil pan gasket, cleaned out the sump pickup screen. Jugs and head painted. BS36 Carbs are on their way back from Bill (chef1366) after their cleaning/jetting/fixing/painting session in california. New dyna green coils.


Can anyone think of anything I have missed here? Any final steps that need doing before the fire meets the fuel?

Other mods to this bike include: 750 oil pump gears, top end oiler, 1150 oil cooler, racetech springs and emulators up front, fork brace, Ikon shocks in back, salty monk brake mod, posplayer's SSPB, APE pods, Yosh 4-1 pipe, GSXR gauge cluster, R1 quick turn throttle....

Oh, that reminds me, I have a little digital voltmeter kicking around I would like to mount up somewhere...

Alrighty, thanks to the following people for assistance, both directly and indirectly....RapidRay, chef1366, loud et, thecafekid, nessism, steve, posplayer, saltymonk, headsbikesmopars, and of course basscliff. And also the gsresources at large.

Let me know your thoughts....

[520eek]

Pictures!!

[greg78gs750]

I will try to get some pics up, but the big news is.....

I HAVE A MOTORCYCLE AGAIN!

Fired up on the second press of the button today. No untoward noises, everything seems to be doing what it should do, took her out for a hot 40 miles this afternoon, running a little lean, so gave another 1/2 turn out on the mixture screws, per chef's advice. I will put about 50 hot miles on her tomorrow, see if the carbs respond to the changes. Feels strong, seems freer-revving, quicker all around. Definitely SOUNDS meaner..... happy happy happy....

[greg78gs750]

Morning update, pulls HARD through the rev range, feels like it wants to pull BEYOND the 9500 redline....1/2 turn out just about cured the lean burble on decel, I do have a little off-idle stumble around 2800-3200 rpms. Carbs have not been vacuum synched yet, so maybe that is it? waiting for the 100 mile retorque/valve adjust for that.

[Joe Garfield]

Great to hear!
Where's the pics?

[chef1366]

Greg has not posted and hasn't returned any phone calls.
I hope he is OK
Anyone hear from him?

[greg78gs750]

heh, I'm fine, bill, just out of town for a few days. I have some questions for you, i will text soon

Bike is running well (mostly), I have a track day scheduled monday, so that should be fun!