Author Topic: porting (Read 1800 times)

Chrisr · « **on:** November 10, 2013, 08:42:37 pm »

Someone ported the snot outta this one....

GrkGuy · « **Reply #1 on:** November 11, 2013, 05:35:40 am »

looks a little thin to me, wonder where those little chunks went

Chrisr · « **Reply #2 on:** November 11, 2013, 07:45:08 am »

Quote from: GrkGuy on November 11, 2013, 05:35:40 am

looks a little thin to me, wonder where those little chunks went

Can't imagine they went anywhere good-lol. I'll put this one on the shelf and keep a eye out for another jug.

Iceracer · « **Reply #3 on:** November 11, 2013, 10:23:15 am »

That's fairly common to see especially on a sleeved cylinder. But just cleaning up and rounding the boysen port area next to the sleeve will do that.
The little chunks are not missing per say, just ported away. Suzuki should of put a little more material there.

All American · « **Reply #4 on:** November 11, 2013, 11:30:58 am »

Hmmmm, I think I know someone with a brand new top end. Jug, head, dome, piston, etc., and all has already been checked out by a builder on here. Hey Carl! It cost me a pretty damn good penny, but since I can't use it, and have no need for it, if someone stepped up and made me a solid offer, bye bye. Lol

GrkGuy · « **Reply #5 on:** November 11, 2013, 11:33:04 am »

$150 sound fair, its only a 250 right.

All American · « **Reply #6 on:** November 11, 2013, 11:39:56 am »

I paid $475 for that top end. If you double the $150.... That's where I would need to be. And I'm not paying to ship these parts anymore lol unless Carl says he shipped them back to me and I owe him.

GrkGuy · « **Reply #7 on:** November 11, 2013, 11:43:21 am »

was it ported or stock.

All American · « **Reply #8 on:** November 11, 2013, 11:48:32 am »

250.. It was stock porting with a new sleeve in it, Carl checked this thing over and said it was good to use.

Chrisr · « **Reply #9 on:** November 11, 2013, 12:20:52 pm »

Quote from: Iceracer on November 11, 2013, 10:23:15 am

That's fairly common to see especially on a sleeved cylinder. But just cleaning up and rounding the boysen port area next to the sleeve will do that.
The little chunks are not missing per say, just ported away. Suzuki should of put a little more material there.

Can you tell from the pic what it may be ported for? If its a midrange style porting I may use it if there is still life in the sleeve. I ride trails so a top end type port is of no use to me. The engine ran pretty good, case halves sprung a leak is why im tearing it down. This is the engine I had you send back to me because of the big financial suprise I got slapped with.

Iceracer · « **Reply #10 on:** November 11, 2013, 12:39:32 pm »

That picture tells absolutely nothing about the way It will run, other than it may have poor throttle response if the transfers and ex port are not set up rite.

That cylinder AA has here is actually a OEM sleeve it looks good, bored and ready to go. i havnt measured it just looked it over quick. Seems to be a nice stock. Cylinder.

Chrisr · « **Reply #11 on:** November 11, 2013, 11:08:15 pm »

Quote from: Iceracer on November 11, 2013, 12:39:32 pm

That picture tells absolutely nothing about the way It will run, other than it may have poor throttle response if the transfers and ex port are not set up rite.

That cylinder AA has here is actually a OEM sleeve it looks good, bored and ready to go. i havnt measured it just looked it over quick. Seems to be a nice stock. Cylinder.

Didn't think the picture would tell much but thought I would ask anyways.

Iceracer · « **Reply #12 on:** November 12, 2013, 06:25:58 am »

Without some measurements Its hard to say what there set up for anyone who says they can tell you is really just guessing and looking at looking at width of ports. Which is poor indicator.

Dimsi · « **Reply #13 on:** November 20, 2013, 09:18:56 pm »

Can anyone chime in regarding my cylinder? Comparing it to OP's it's even more shaved i think. Anyone have a guess what kind of porting it is?

Chuckie25 · « **Reply #14 on:** November 20, 2013, 09:48:57 pm »

Take a pic from above it of the transfers with the cylinder upside down like your last pic

Our intake tracts look similar

Dimsi · « **Reply #15 on:** November 20, 2013, 10:01:37 pm »

How's this?

No idea what I'm looking for lol

MotorGeek - Jerry Hall · « **Reply #16 on:** November 20, 2013, 10:11:56 pm »

Quote from: Dimsi on November 20, 2013, 09:18:56 pm

Can anyone chime in regarding my cylinder? Comparing it to OP's it's even more shaved i think. Anyone have a guess what kind of porting it is?

You are not showing us the ports that make much of a difference on the power. We need to have port widths, port heights, port angles on the transfer and exhaust ports where the ports intersect the bore.

About 80% of the power gains are made from the transfer and exhaust port window back into the port tunnel about !/2 inch.

Dimsi · « **Reply #17 on:** November 20, 2013, 10:48:36 pm »

Did you see my second post with the additional pics? Or do I need to try from a different angle?

Maxxh2o · « **Reply #18 on:** November 21, 2013, 03:54:14 am »

Rub out a port map and start measuring. It is a solid start, better than snapping a picture and asking someone else.

GrkGuy · « **Reply #19 on:** November 21, 2013, 10:10:34 am »

see if you can put a sheet of paper in it and try to outline the ports, remember in school when you could take a penny and a pencil
and rub the pencil on it sideways and it would copy the penny. you need to try something like that so you can get measurements. guys like us dont have the correct tools to get down in there and measure them. try to copy the everything inside the cylinder.

good luck,

Dimsi · « **Reply #20 on:** November 21, 2013, 10:28:18 am »

OK, now I understand what you guys mean. I found this page that explains and shows it pretty well: http://www.macdizzy.com/cylinder_map.htm.
I misunderstood OP's post and thought a picture can be enough to tell you something...

Chuckie25 · « **Reply #21 on:** November 21, 2013, 10:29:18 pm »

the only time you can guess how an engine is going to run via a picture of the intake is when the ports look something like this LOL

the cylinder on the right is whats on the CR85 we built. It came off a shifter kart lmao

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Author Topic: porting (Read 1800 times)

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