don't think that anyone in here would be interested in my build but still wanted to make a thread about it. Here it is, 75 rog pony express, basically bone stock now. Should be a torque monster in the end, we'll see though.
I like it, what is that frame?
> Stefan Josheski Wrote:
> don't think that anyone in here would be interested in my build but
> still wanted to make a thread about it. Here it is, 75 rog pony express,
> basically bone stock now. Should be a torque monster in the end, we'll
> see though.
Rubbish, I'm interested, love a good sleeper!!
Love it!...Looks like ass...Don't change a thing except of course the horsepower...Have fun!!!! Wooot!
Friend of mine gave me his gopro to film this machine, had some fun and did some wheelies (no rear brake btw). Enjoy
This dude is awesome! (edited)
Fun video, not so fun title. (edited)
Haha thanks man!
thoughts on this? Can't find polinis in stock anywhere, and that exhaust bridge do be sexy
the rebuild kit dos offers good or no?
Also, I'm aware of the issue with piston at bdc, and I saw some comments on this piston that it fixed it:
and I would need a "countersunk head" for the squish, what does countersunk mean? Also, wouldn't I be good with sanding the stock head down and if needed not use a head gasket?
The piston doesn't go all the way to the top of the cylinder so the counter sunk head is cut so the head sits down in the cylinder a little to bump compression back up. If you're building a torque monster you'll need one. I've ran and actually love that particular kit once dialed in.
Thanks for the info, what were all the parts you ran with the kit?
side to side on the rod is OK, in and out is not. neither is sloppy RTV over incompletely removed base gaskets. clean all that off both surfaces and get or cut a decent gasket for sure. also looks like your head been leaking,. the piston will get black over time pretty inevitably, you're buring oil in there. make sure the exhaust isnt coking up, you can scrape it off with a plastic scraper is best. metal is fine except when you make scratches it gets easier for more carbon to build up on the rough spots.
generally tho seems mostly oK, cool!
here's the video
Edit: Also did do 3 failed attempts at port maps and I just measured the ports for height (forgot to do width for the exhaust port and intake lol), so I got this:
-Cylinder deck to top of the exhaust port: 32.15mm
-Cylinder deck to bottom of exhaust port: 43.45mm
-Cylinder deck to top of the intake port: 51.5mm
-Deck to bottom of intake port: 60.9mm
-Top of the deck to to top of transfers: 37.35mm
*Total exhaust in height: 11.3mm
*Total intake: 9.4
Have yet to calculate the timings, and go back and maybe retry the port map or at least measure the width of the ports somehow. (edited)
Got a port map, turns out I didnt apply enough pressure XD. Now I'm thinking about doing some very basic ass porting after I rebuild. Thinking bout adding another base gasket so I have 2mm to get the transfers to 106°, then cut the crown 1mm down at the exhaust (if possible to go down that much) and get it to 153°, sand the head 1mm to get the squish back, and open a 2mm window at the intake to get 134°. Should be good?
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