|
|
Post by hypojam on May 10, 2006 15:53:03 GMT
Ported/polished my head today   The ports looked restrictive and i ended up cutting alot of material away from them using a cone cutter drill bit and my high speed rotary tool.  I got the ports perfectly neat and freeflowing at the end  Sorry i didnt take many pictures, i was in a rush to put it back together  Im gonna go test it now to see if its any better  |
|
|
|
Post by hypojam on May 10, 2006 16:25:12 GMT
Not any faster  |
|
|
|
Post by hypojam on May 10, 2006 17:20:45 GMT
Im guessing im going to have to port my inlet manifold
|
|
|
|
Post by hypojam on May 10, 2006 18:09:49 GMT
Ok i enlarged my inlet manifold by quite abit so that it would match the port in the head!
Its Feels much better now and im pretty sure its accelerating faster too...
|
|
|
|
Post by hypojam on May 10, 2006 19:20:31 GMT
Just refitted my 3.9g Rollers!
Going very nicely #woohoo#
|
|
|
|
Post by baotian on May 10, 2006 19:55:20 GMT
lol nice work hypo, at least someone is enjoying it lol.
it seems to me like you still have a soft spot for yout taishan
|
|
|
|
Post by hypojam on May 10, 2006 19:59:15 GMT
I really do love my scoot  Dont think im ever gonna get rid of it, probably break my heart |
|
|
|
Post by dmilo on May 10, 2006 20:19:20 GMT
brave job
How fast does it go now ??
|
|
|
|
Post by hypojam on May 10, 2006 20:24:07 GMT
Lol Same speed  Pretty sure it accelerates slightly better though  |
|
|
|
Post by hypojam on May 10, 2006 20:28:31 GMT
Now all i think the problem is the downpipe on the exhaust is too small causing it to be restrictive Might have a go at exhaust porting |
|
|
|
Post by dmilo on May 10, 2006 20:34:16 GMT
keep us updated & show some pics
|
|
madtim
Forum Master
Posts: 139
|
Post by madtim on May 10, 2006 21:18:36 GMT
Just refitted my 3.9g Rollers!
where did ya get them from ?how easy to do? how much? worth doin ?
|
|
|
|
Post by hypojam on May 11, 2006 10:49:31 GMT
Went and ported my inlet manifold again! There was still a substantial amount of material left in there, now its much wider ;D Decided to go and do a max speed run here are the results:  Only got 45mph on the flat and 48 going down hill I Did expect abit more To be honest  Well anyways once i had opened up the inlet manifold abit i could definitely feel it accelerate faster, so i'm not too disappointed with all my hard work... |
|
|
|
Post by hypojam on May 12, 2006 10:19:02 GMT
Today i decided to bore some material out from the down pipe!
As usual i cant really feel any difference, but i guess its has to help in some way...
Also i changed my jet back to #90 because the engine was running too rich with the #95 jet,
Definitely feels more responsive and revs rather happily now
|
|
|
|
Post by dmilo on May 12, 2006 19:48:00 GMT
hypojam
thanks for all the work and info 45 is good
dmilo
|
|
|
|
Post by Jenkos0wls on May 13, 2006 9:06:12 GMT
i think il av a go on that as my baotian can do 55mph on the flat but its just slugish on the acceleration but i do still have the 7.5 roller weights in fo top speed.
Hypojam change your belt for a new one ul find ur engine seems quiter and less powerful buts its not it goes way faster. ihad my original belt on the scoot and couldnt go any faster than 45 down hill changed the belt and its 60 all the way
|
|
|
|
Post by BillyGreen1973 on May 13, 2006 14:47:53 GMT
Where did you get your drive belt from?
|
|
|
|
Post by hypojam on May 13, 2006 19:27:48 GMT
i think il av a go on that as my baotian can do 55mph on the flat but its just slugish on the acceleration but i do still have the 7.5 roller weights in fo top speed. Hypojam change your belt for a new one ul find ur engine seems quiter and less powerful buts its not it goes way faster. ihad my original belt on the scoot and couldnt go any faster than 45 down hill changed the belt and its 60 all the way I doubt those speed figures! I bought a new belt about 3 months ago |
|
