Suzuki Quadracer HQ
LT250R Quadracer => LT250R - Engine => Topic started by: Chrisr on November 10, 2013, 08:42:37 pm
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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
(http://i1122.photobucket.com/albums/l536/Cj15941/photo-49.jpg) (http://s1122.photobucket.com/user/Cj15941/media/photo-49.jpg.html)
the cylinder on the right is whats on the CR85 we built. It came off a shifter kart lmao
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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 (http://www.macdizzy.com/cylinder_map.htm).
I misunderstood OP's post and thought a picture can be enough to tell you something...
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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,
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Rub out a port map and start measuring. It is a solid start, better than snapping a picture and asking someone else.
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Did you see my second post with the additional pics? Or do I need to try from a different angle?
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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?
(http://i31.photobucket.com/albums/c397/dimobg/Quad/2013-11-20192523_zpsd8048940.jpg)
(http://s31.photobucket.com/user/dimobg/media/Quad/2013-11-20192523_zpsd8048940.jpg.html)(http://i31.photobucket.com/albums/c397/dimobg/Quad/2013-11-20194835_zps64ab850e.jpg) (http://s31.photobucket.com/user/dimobg/media/Quad/2013-11-20194835_zps64ab850e.jpg.html)
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.
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How's this?
(http://i31.photobucket.com/albums/c397/dimobg/Quad/2013-11-20215347_zps03f888d2.jpg) (http://s31.photobucket.com/user/dimobg/media/Quad/2013-11-20215347_zps03f888d2.jpg.html)
(http://i31.photobucket.com/albums/c397/dimobg/Quad/2013-11-20215317_zps23d54955.jpg) (http://s31.photobucket.com/user/dimobg/media/Quad/2013-11-20215317_zps23d54955.jpg.html)
(http://i31.photobucket.com/albums/c397/dimobg/Quad/2013-11-20215240_zps26f4e348.jpg) (http://s31.photobucket.com/user/dimobg/media/Quad/2013-11-20215240_zps26f4e348.jpg.html)
(http://i31.photobucket.com/albums/c397/dimobg/Quad/2013-11-20215905_zpsb83b8740.jpg) (http://s31.photobucket.com/user/dimobg/media/Quad/2013-11-20215905_zpsb83b8740.jpg.html)
(http://i31.photobucket.com/albums/c397/dimobg/Quad/2013-11-20215727_zps1f3d3539.jpg) (http://s31.photobucket.com/user/dimobg/media/Quad/2013-11-20215727_zps1f3d3539.jpg.html)
No idea what I'm looking for lol
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Take a pic from above it of the transfers with the cylinder upside down like your last pic
Our intake tracts look similar
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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?
(http://i31.photobucket.com/albums/c397/dimobg/Quad/2013-11-20192523_zpsd8048940.jpg)
(http://s31.photobucket.com/user/dimobg/media/Quad/2013-11-20192523_zpsd8048940.jpg.html)(http://i31.photobucket.com/albums/c397/dimobg/Quad/2013-11-20194835_zps64ab850e.jpg) (http://s31.photobucket.com/user/dimobg/media/Quad/2013-11-20194835_zps64ab850e.jpg.html)
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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.
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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.
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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.
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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.
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250.. It was stock porting with a new sleeve in it, Carl checked this thing over and said it was good to use.
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was it ported or stock.
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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.
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$150 sound fair, its only a 250 right. :)
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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
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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.
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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.
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looks a little thin to me, wonder where those little chunks went
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Someone ported the snot outta this one....