750T--Valve Cover Adjustment with Pics

[Crankthat]

I'm thinking I don't have shims. I did adjust the tappets individually between .003-.005. Make the .003 feeler fit snug and the .005 should not go in.

I used this as my guide: http://members.dslextreme.com/users/...adjustment.pdf

Back to the drawing board with my technique. If at first I don't succeed...


Ed

I think he was using shims as word in place of feeler gauges. Shimming one side with a feeler gauge while tightening the other side with another gauge.
When you tighten the tappet on one side it see saws the other side.
The shim bikes do not have the tappet to tighten or loosen.

[gustovh]

I'm thinking I don't have shims. I did adjust the tappets individually between .003-.005. Make the .003 feeler fit snug and the .005 should not go in.

I used this as my guide: http://members.dslextreme.com/users/...adjustment.pdf

Back to the drawing board with my technique. If at first I don't succeed...


Ed

By shims, I meant the .004 feelers for setting the tappets.
V

[GSXR7ED]

Almost Done

Spent my Friday evening re-accomplishing my "T's" valve adjustment. Here's a couple of pics...I got lost in my dis-assembly so I didn't take many pics. These new mirrors from Boulevard Suzuki are great!



I clamped the fuel line and removed the tank. Then...



Made sure I didn't lose all the bolts. Gasket is in great shape too.



I did as was suggested about the rocker arms (adjust the bolts at the same time). Loosened both bolts, then slightly tightened the tappet until it made contact (both sides0, then opened it enough to start the shim/feeler gauge process.

This time I went to .005 gap...doing each pair individually. I made sure the teardrop cam lobe (pointed section) was at the top and perpendicular to the rocker arm. I didn't do as was suggested in the instructions from before...this seemed to work better.

So today I will put everything back together and re-install a new fuel filter, vacuum line, and replace the fuel hose I cut. I like how I becoming familiar with removing the tank and cover. I'll probably forget how the next time I do this.



Ed

[GSXR7ED]

Replies

Anytime I've adjusted my valves, I always end up with one or two ticking just a bit, never fails. Though this last adjustment, really don't have a ticking for once, then again I didn't have to adjust many of them, I believe 4 or 5. The rest were spot on at around .004. Rather have then a bit loose then to tight. Seems like the older the bike gets the valve adjustments don't change much.

I'll find out today just how much of a difference going from .003 to .005 will do for my bike.

I imagine the metal eventually gets "used to" the heat and the expansion/contraction, thus required a smaller adjustment as it ages. The shims still wear from the cam lobes, of course.

Thanks for the pictures and story! It will be helpful.

Thanks for viewing and for your helpful feedback!

I think he was using shims as word in place of feeler gauges. Shimming one side with a feeler gauge while tightening the other side with another gauge.
When you tighten the tappet on one side it see saws the other side.
The shim bikes do not have the tappet to tighten or loosen.

Now I understand. Thanks.

By shims, I meant the .004 feelers for setting the tappets.
V

I definitely understand now. I appreciate the explanation.


Ed

[850 Combat]

I have an old car with screw tappet adjustment. It is designed and built with an interference fit in the screw and rocker arm thread. There is no lock nut or wobbly loose screw that changes when you tighten the lock nut. All my old English bikes (except some of the singles that had eccentrics) had the screw and lock nut, as does my Lotus 7, as did my air cooled VWs, and stock Cortinas. It isn't that hard to get the screw and nut ones right by setting them off a little and anticipating where they will be when they are tightened, but not having the locknut and having the screw stay where you initially set it is nice.

[mrbill5491]

I have learned one thing about these screw adjustable rockers, keep some new spares on hand. They do get tight on threads and will need to be replace at times. Think I have a bout 4 spares of the nut and screw. Had to replace one this last time. Thought I could free one up, just buggers the threads. Besides the new ones are fairly cheap. Thing is, it would not prevent you from riding that day or the next waiting on the parts.

[GSXR7ED]

Finally Complete!

I have learned one thing about these screw adjustable rockers, keep some new spares on hand. They do get tight on threads and will need to be replace at times. Think I have a bout 4 spares of the nut and screw. Had to replace one this last time. Thought I could free one up, just buggers the threads. Besides the new ones are fairly cheap. Thing is, it would not prevent you from riding that day or the next waiting on the parts.

I don't wanna have to do anything I don't need to...trust me, this little job took some effort on my part. I had a friend help me and now I understand the process and can breakdown the components to get to the valve cover.

Real eye-opener...and I replaced the vacuum line and put a new fuel filter in there! She is PURRING NICELY!

Now I'll need to do something about the throttle because when I do WOT, she delays in REVS. This trips me out because I was totally reluctant to do this on my first bike! It would have put me on my a$$ if I did that.

Loosening both bolts and then adjusting the tappet so they are even and then doing the shimming worked out GREAT! .(005 is where I want to be thanks to Steve for his guidance!!!)

I'll be scheduling a ride soon but right now gotta do some chores/errands.



Ed

[GSXR7ED]

Moar Fotos

Had me a Chorizo burrito and a cup of coffee this am to get things going.



And here's a day pic of my uncovered valves.



I am totally satisfied with the advice from Steve (closer to .005). Dude you rock man!

It's pretty cold atm but I will ride...oh man am I gonna go for a ride!


Ed

[Wester Cooley]

I have learned one thing about these screw adjustable rockers, keep some new spares on hand. They do get tight on threads and will need to be replace at times. Think I have a bout 4 spares of the nut and screw. Had to replace one this last time. Thought I could free one up, just buggers the threads. Besides the new ones are fairly cheap. Thing is, it would not prevent you from riding that day or the next waiting on the parts.

Been there on my GSXR750. Same part numbers I believe.

Make sure you torque those little nuts too. Seen a few come loose on customers that did their own valve adjustment.

You won't believe how much damage that little nut and adjuster will do inside a motor!!!!

[GSXR7ED]

Today's ride...

Headed to Cloud Croft for a quick ride...it's flippin' cold today so this ride was cut a bit short. She's running FINE! (I like my new mirrors)




Ed

[GSXR7ED]

Snow T

My poor baby! I forgot to check the weather yesterday (dumb me) and my "T" is just looking at me as if to say, "Why?"





Ed

[Nessism]

A little too late but wanted to chime in to suggest adjusting these valves using two feeler gauges at the same time. Doing one at a time will allow the rocker to tilt and edge load the cam. Honda sent out a service bulletin with this instruction back in the day for their V4 engine bikes, but the info is applicable for any engine using forked rockers.

[GSXR7ED]

You're not late at all...

A little too late but wanted to chime in to suggest adjusting these valves using two feeler gauges at the same time. Doing one at a time will allow the rocker to tilt and edge load the cam. Honda sent out a service bulletin with this instruction back in the day for their V4 engine bikes, but the info is applicable for any engine using forked rockers.

It was suggested to use two feeler gauges/shim gauges two at time and that's exactly what I did...thanks for sharing your knowledge...you GSR dudes are AWESOME!

I loosened both bolts then tightened the tappet till it made contact, then opened it up just a tad to allow for the .005 to slide in. Then I proceeded to do the same with the other side making sure the rocker arm was as balanced as can be. I kept the .005 gauge in there while adjusting the other...this worked out great!

I also did each lobe individually...turned the cam until the highest point was perpendicular to the rocker arm. This worked great and I'm happy with the results.


Ed

[Badooka]

Red did you re synch the carbs after the valve adjust? You will run even better if you do.
That last photo is worse than leave a dog out in the cold... Come on now!!!!

[GSXR7ED]

My Badd

Red did you re synch the carbs after the valve adjust? You will run even better if you do.
That last photo is worse than leave a dog out in the cold... Come on now!!!!

No, I didn't mess with the carbs. I do think I need to adjust the throttle cable though...it's late reacting to WOT.

Trust me...I felt like CRAP leaving my baby out in the elements. I normally keep her in my apartment as before--park it right next to my fold-able trailer.


Ed