Search found 16 matches

by Hobbs469
Tue Jun 20, 2017 10:10 pm
Forum: PCX Performance
Topic: 150 head conversion questions
Replies: 0
Views: 2071

150 head conversion questions

Hi guys just looking for some info, I am running the yuminashi 164 kit on my 2011 pcx 125 with 31mm the and their camshaft with matching injector. I am gonna order the 150 head conversion kit and was wondering if I am gonna need a fuel controller ??? And if I do is the yuminashi one the best one to ...
by Hobbs469
Tue Jun 13, 2017 10:33 am
Forum: PCX Performance
Topic: Finally put my 164 yuminashi kit on the dyno
Replies: 2
Views: 2095

Re: Finally put my 164 yuminashi kit on the dyno

It was a Dyno jet my head is also decked because it was warped. So it may have a little more compression than normal.
by Hobbs469
Mon Jun 12, 2017 10:06 pm
Forum: PCX Performance
Topic: Finally put my 164 yuminashi kit on the dyno
Replies: 2
Views: 2095

Finally put my 164 yuminashi kit on the dyno

Went to the Smokey mountain crawl this past weekend and put my bike on the dyno. It made 14.71 horse power and almost 9 ftlbs of torque. The is on a 2011 pcx motor with the 164cc essentials kit with 31mm tb and matching cam. Def. Pulls good being bolted onto a ruckus chassis. Had the 4 the highest h...
by Hobbs469
Sun Jun 04, 2017 12:27 pm
Forum: PCX Performance
Topic: Yuminashi 164cc keeps over heating
Replies: 17
Views: 4472

Re: Yuminashi 164cc keeps over heating

So is the 1.6 psi radiator cap the biggest they make I am still pushing coolant into my overflow when running high rpm
by Hobbs469
Fri Apr 28, 2017 7:58 am
Forum: PCX Performance
Topic: Yuminashi 164cc keeps over heating
Replies: 17
Views: 4472

Re: Yuminashi 164cc keeps over heating

Hmmmm decisions decisions has anyone ever used the GPI radiators ??? Also do I have to buy a new cam or will the 125 cam work in the 150 head???
by Hobbs469
Tue Apr 25, 2017 6:39 pm
Forum: PCX Performance
Topic: Yuminashi 164cc keeps over heating
Replies: 17
Views: 4472

Re: Yuminashi 164cc keeps over heating

If you're using the 125 with big bore cylinders,its advisable to port out the water holes on the head to match the gasket ports for the cylinder. A quick dremel work is required for it to be done. That'll allow a maximum water flow and cooling effect the way its supposed to be. Using a 150 head has...
by Hobbs469
Tue Apr 25, 2017 12:43 pm
Forum: PCX Performance
Topic: Yuminashi 164cc keeps over heating
Replies: 17
Views: 4472

Re: Yuminashi 164cc keeps over heating

Sounds like you are too lean on WOT. Are you the guy who milled his head down a bit? That can cause increased compression. Yuminashi kits already come with very very very high compression ratios already. However, I have a guy running the same kit without problems and he squeezed 20000km or 12500 mi...
by Hobbs469
Tue Apr 25, 2017 8:02 am
Forum: PCX Performance
Topic: Yuminashi 164cc keeps over heating
Replies: 17
Views: 4472

Yuminashi 164cc keeps over heating

So I have put about 500 miles on my 164 kit in my 2011 pcx 125 and it's starting to have some issues. If I run for wide open for longer than a minute or so it will start pushing coolant into the overflow. If I ride slow it won't have an issue just when I am being heavy on the throttle. I have the 1....
by Hobbs469
Fri Feb 10, 2017 9:07 pm
Forum: PCX Performance
Topic: PCX water overheat issue ( red light icon )
Replies: 10
Views: 4617

Re: PCX water overheat issue ( red light icon )

try the cap first, maybe run longer radiator hose/s or air scoop?(see link) check page 11 of takegawa pcx 170 http://s1228.photobucket.com/user/vladmel1/media/P1010176_zps42fdb47e.jpg.html So not to be a total creeper but in this Photobucket link their is a picture of a pcx radiator split in one of...
by Hobbs469
Thu Nov 24, 2016 8:46 pm
Forum: PCX Performance
Topic: Yuminashi help!!!!
Replies: 43
Views: 4758

Re: Yuminashi help!!!!

I'd be checking all of the hoses and clamps... I have pretty much checked everything other than replacing the thermostat. I can actually see the splits in the radiators and where it's leaking.they always seem to split in the core right on the front or back of the tube Maybe change the thermostat, i...
by Hobbs469
Wed Nov 23, 2016 8:28 pm
Forum: PCX Performance
Topic: Yuminashi help!!!!
Replies: 43
Views: 4758

Re: Yuminashi help!!!!

Pcxdemon wrote:I'd be checking all of the hoses and clamps...
I have pretty much checked everything other than replacing the thermostat. I can actually see the splits in the radiators and where it's leaking.they always seem to split in the core right on the front or back of the tube
by Hobbs469
Fri Nov 18, 2016 8:21 am
Forum: PCX Performance
Topic: Yuminashi help!!!!
Replies: 43
Views: 4758

Re: Yuminashi help!!!!

Update well I discovered my problem when I tore it back down the head was warped. Had it milled down about 6 thousandths and every thing was good after start up I put about 100 miles on it of short trips here and their with no issues what so ever. Last night decided to take a longer trip and rode ab...
by Hobbs469
Tue Oct 25, 2016 1:06 pm
Forum: PCX Performance
Topic: Yuminashi help!!!!
Replies: 43
Views: 4758

Re: Yuminashi help!!!!

Well I received all of my parts and put the engine together this past weekend and took it out for a ride and it started burning coolant. I am gonna triple check again that my head wasn't warped but is their any secrets to these copper head gaskets?? should I have put something on it??
by Hobbs469
Thu Sep 22, 2016 7:10 am
Forum: PCX Performance
Topic: Yuminashi help!!!!
Replies: 43
Views: 4758

Re: Yuminashi help!!!!

Well update after my post yesterday I magically got an email from them. They looked into and did realize my parts were missing as of last night he had them boxed up and ready to ship and even threw in a set of roller rockers for my troubles. So we will see if it gets here in time. Their is a big rid...
by Hobbs469
Wed Sep 21, 2016 9:33 am
Forum: PCX Performance
Topic: Yuminashi help!!!!
Replies: 43
Views: 4758

Re: Yuminashi help!!!!

I ordered it I think around August 19th and received it September 14th. Which I also received a message from him on Sept. 2nd that said he was sorry it was taking so long but he had to let one of his guys go and that it looked like everything was in stock and he would get it shipped out as fast as p...
by Hobbs469
Wed Sep 21, 2016 9:01 am
Forum: PCX Performance
Topic: Yuminashi help!!!!
Replies: 43
Views: 4758

Yuminashi help!!!!

Hey guys I am new here, but have been trolling around for the past year since I bought my pcx!!! Recently I ordered a yuminashi essentials kit which comes with the 164cc bore up kit and cam throttle body and all kinds of other goodies. Well I received it about a week ago and the cam and throttle bod...