113 SnS rebuild..
#101
#102
I used these top rings on my drop on 110 twin cam
https://www.enginelabs.com/engine-te...-game-changer/
https://www.enginelabs.com/engine-te...-game-changer/
#103
Maybe, don't remember when I did the mod. One thing I did was smooth the passage from carb to the mansfold. It's an old sandcast manifold with the blade in the back. The head actually flows as good with the manifold as a straight stack on the port. I believe I did that after the last dyno run I've done on this bike.. Before I tried both 1 and 2 1in spacers and they didn't really make any difference. The problem was that the motor was being held back by the exhaust and CR.
Last edited by Max Headflow; 01-20-2023 at 10:36 PM. Reason: with..
The following users liked this post:
Schex (01-21-2023)
#104
The following 2 users liked this post by Schex:
Max Headflow (01-21-2023),
Rains2much (02-02-2023)
#105
I picked up 2 lbs of torque on the Dyno and yes with High compression builds and higher head temps you will still need the Insulator..
What happens when the gas ports get plugged by carbon? Won't that effect seal down the road?? as in less combustion pressure now behind the ring pushing it out into the cylinder wall...
I used these top rings on my drop on 110 twin cam
https://www.enginelabs.com/engine-te...-game-changer/
https://www.enginelabs.com/engine-te...-game-changer/
The following users liked this post:
Schex (01-21-2023)
#106
I picked up 2 lbs of torque on the Dyno and yes with High compression builds and higher head temps you will still need the Insulator..
What happens when the gas ports get plugged by carbon? Won't that effect seal down the road?? as in less combustion pressure now behind the ring pushing it out into the cylinder wall...
What happens when the gas ports get plugged by carbon? Won't that effect seal down the road?? as in less combustion pressure now behind the ring pushing it out into the cylinder wall...
from the article-
“ Because the ring rotates within the piston ring groove, only a small amount of carbon would be expected to accumulate in the lateral gas ports. Plus, with the use of high-quality engine oil and the proper additive package that includes detergents, the likelihood of these lateral gas ports remaining clean and functional are very good.”
#107
While the crankcase and crank are out, need to work on the top end.
The heads are in good shape. Guides are work may 1/2 thou.. Valve springs were toast. Set height they measured 140,150, 150 and 162 lbs. Stock is 170.. Made a seal puller as I was tired of trying to get them off with a channellocks and a screwdriver.
The heads are in good shape. Guides are work may 1/2 thou.. Valve springs were toast. Set height they measured 140,150, 150 and 162 lbs. Stock is 170.. Made a seal puller as I was tired of trying to get them off with a channellocks and a screwdriver.
The following 2 users liked this post by Rains2much:
Jd1a (01-21-2023),
Max Headflow (01-21-2023)
#108
I do the same but probably only 5-6 strokes and use a about a 600 grit brush hone.. I also get to within about 0.001 of finished size with 80 grit stones before going to the finer stones. I like to still see some crosshatch after 60000 miles...
#109
This thread is really good for me. I do some minor machining messaging of parts but for the most part I blueprint and send back n forth to a machinist. I’m learning a lot from this thread and want to thank everyone for their comments. Some things substantiate my own opinions and other comments make me question my methods lol.
After I’ve read it a few more times and meditated I would like to comment on the intake tuning with carb spacers and heats.. exhaust too. In that area I’ve spent a lot of time experimenting and I learned many years ago a lot from Denish’ books the High Performance Guides, All three books are valuable to have. Some things worked for me some things didn’t, but the formulas for tuning pipe and intake did work for me. Most revealed through constant mph gains of losses. Mph seemed to reveal best for me.
I can’t wait to later tonight to really dig further into everyone’s comments and the posts.
After I’ve read it a few more times and meditated I would like to comment on the intake tuning with carb spacers and heats.. exhaust too. In that area I’ve spent a lot of time experimenting and I learned many years ago a lot from Denish’ books the High Performance Guides, All three books are valuable to have. Some things worked for me some things didn’t, but the formulas for tuning pipe and intake did work for me. Most revealed through constant mph gains of losses. Mph seemed to reveal best for me.
I can’t wait to later tonight to really dig further into everyone’s comments and the posts.
Last edited by Rains2much; 01-21-2023 at 09:47 AM.
#110