Planet Minis

steve longstreth · 11-16-2008, 01:30 PM

ok i know i ask alot of questions about motors for a ct70 how much cutting on a gpx 125 to get it in . just the back engine mount on the motor right . grind it back to clear . getting impatioent to get a motor. been trying to hold out to make the right choice. if i use the gpx 125 do i have to use a oil cooler or can i make jumper like the 140 lifan . and if idont use one on the 125 will it be to hard on the motor it will be ran on the street mostly. thanks for the imput

big pete · 11-16-2008, 03:19 PM

the 125cc motors don't need an oil cooler

FastMC · 11-16-2008, 06:10 PM

Shouldnt need any grinding to fit a GPX125 in a CT.

steve longstreth · 11-16-2008, 08:42 PM

are they pretty solid and reliable. was going to buy a lifan 150 and heard about the breakage issues .

The 26incher · 11-16-2008, 08:54 PM

No mod needed...

fatcaaat · 11-16-2008, 08:59 PM

The GPX is no more reliable than the Lifan 150 I don't think.

However, you can always buy yourself a 140 for a little more and it comes with a better head.

cdoublejj · 11-16-2008, 11:46 PM

i got a lifan 125 and it ran for 5 minutes then the ignition quit.

foxman · 11-17-2008, 12:00 AM

ive had a gpx125 for 1 whole year running mint,never missed a beat,and i have screwed everytime i rode it.awsome engine buddy

steve longstreth · 11-18-2008, 06:11 PM

so if i end up buying the gpx 125 what would be the right pipe to use on it for the ct and if i dont run a oil cooler do i run a jumper like the 140s. and will it hurt it with no cooler

cdoublejj · 11-18-2008, 06:21 PM

does it even have the plumbing for an oil cooler? my lifan 125 doesn't have one and seems to be just fine... so far.

FastMC · 11-18-2008, 06:22 PM

We've been running a couple of them without coolers for a while now no problem on the street. The GPX 125s dont have the oil cooler jumper you just run it off the head if you want a cooler. Most any CT pipe will work. I have the Kitaco CT up pipe on mine and my buddy Butch got a pretty nice pipe from Staggs that was off an OGM I think (Pitster X4 type) it was practically a direct fit for around $75. Just needed a small jumper bracket to bolt up. I see if I can come up with a pic.

FastMC · 11-18-2008, 06:28 PM

Her'es mine...GPX125 with a TB 146 kit (no oil cooler) Kitaco pipe. I'll get a pic of Butch's pipe tomorrow. I'm sure most of the low pipes would work as well if you like those.

moto234 · 11-18-2008, 07:38 PM

Quote:

Originally Posted by cdoublejj

i got a lifan 125 and it ran for 5 minutes then the ignition quit.

the same thing happend to me except i rode mine for like a month then it never started again

steve longstreth · 11-18-2008, 07:40 PM

what pegs will fit . the honda set. off my old motor wont work on it i m guessing?

FastMC · 11-18-2008, 08:16 PM

Quote:

Originally Posted by steve longstreth

what pegs will fit . the honda set. off my old motor wont work on it i m guessing?

That is an issue but it can be overcome fairly easy. I used a CRF50 peg bracket (has a sidestand mount). Had to use 1/4" spacers and slightly longer bolts to lower the whole assy a little to clear the wider clutch cover. You may have to tweak the brake pedal a little also.

Pitster · 11-21-2008, 12:27 AM

Quote:

Originally Posted by steve longstreth

ok i know i ask alot of questions about motors for a ct70 how much cutting on a gpx 125 to get it in . just the back engine mount on the motor right . grind it back to clear . getting impatioent to get a motor. been trying to hold out to make the right choice. if i use the gpx 125 do i have to use a oil cooler or can i make jumper like the 140 lifan . and if idont use one on the 125 will it be to hard on the motor it will be ran on the street mostly. thanks for the imput

Good questions, have a look at this photo gallery, it should help out also, Simple deal really..

Pitsterpro - Quality Pit Bikes, Mini Bikes, Pit Bike Parts & Accessories

look at the "PICS OUR PARTS ON OTHER BIKES" a few ct 70's with our motors on them. Hope this helps.

Pitster · 11-21-2008, 12:30 AM

Quote:

Originally Posted by FastMC

Her'es mine...GPX125 with a TB 146 kit (no oil cooler) Kitaco pipe. I'll get a pic of Butch's pipe tomorrow. I'm sure most of the low pipes would work as well if you like those.

Very nice looking, I like the swingarm, what is it?

FastMC · 11-21-2008, 12:35 AM

Quote:

Originally Posted by Pitster

Very nice looking, I like the swingarm, what is it?

Thanks...The swingarm is from G-craft.

steve longstreth · 11-21-2008, 04:30 PM

like the looks of thepipe fast mc. will a crf style pipe fit the ct. i like the kitaco but sadly cant afford a new one . trying to budget build the crf pipes look like they have a sharp bend and tha little guard dont realy like the way they look but seen some cheap

FastMC · 11-21-2008, 06:25 PM

This is basically the same pipe we put on Butch's CT but it says OGM on it. I'm sure there are lots of "Take-offs" out there for low $$. Sorry I havent got a pic of it yet maybe saturday I'll bring my camera to the shop. It's actually a pretty nice pipe and fit the CT well. You just have to make sure it's for the Honda style head and not the bigger YX motors.

11-16-2008, 01:30 PM	#1 (permalink)
steve longstreth 1st Gear Member Join Date: Aug 2008 Posts: 175 My Mood:	gpx 125 ok i know i ask alot of questions about motors for a ct70 how much cutting on a gpx 125 to get it in . just the back engine mount on the motor right . grind it back to clear . getting impatioent to get a motor. been trying to hold out to make the right choice. if i use the gpx 125 do i have to use a oil cooler or can i make jumper like the 140 lifan . and if idont use one on the 125 will it be to hard on the motor it will be ran on the street mostly. thanks for the imput

11-16-2008, 03:19 PM	#2 (permalink)
big pete 2nd Gear Member Join Date: Apr 2008 Location: Norcal Posts: 866	Re: gpx 125 the 125cc motors don't need an oil cooler

11-16-2008, 06:10 PM	#3 (permalink)
FastMC Sporting the Merkin Join Date: Mar 2004 Location: boston area Posts: 5,072 My Mood:	Re: gpx 125 Shouldnt need any grinding to fit a GPX125 in a CT.

11-16-2008, 08:42 PM	#4 (permalink)
steve longstreth 1st Gear Member Join Date: Aug 2008 Posts: 175 My Mood:	Re: gpx 125 are they pretty solid and reliable. was going to buy a lifan 150 and heard about the breakage issues .

11-16-2008, 08:54 PM	#5 (permalink)
The 26incher 1st Gear Member Join Date: Nov 2006 Location: Torrance, CA aka The Darkside Posts: 225	Re: gpx 125 No mod needed...

11-16-2008, 08:59 PM	#6 (permalink)
fatcaaat 3rd Gear Member Join Date: Sep 2004 Location: Arlington, VA Posts: 3,780	Re: gpx 125 The GPX is no more reliable than the Lifan 150 I don't think. However, you can always buy yourself a 140 for a little more and it comes with a better head.

11-16-2008, 11:46 PM	#7 (permalink)
cdoublejj 3rd Gear Member Join Date: Oct 2008 Location: St.Joe MO Posts: 1,368 My Mood:	Re: gpx 125 i got a lifan 125 and it ran for 5 minutes then the ignition quit.

11-17-2008, 12:00 AM	#8 (permalink)
foxman PM Newbie Join Date: May 2008 Location: New Zealand Posts: 88	Re: gpx 125 ive had a gpx125 for 1 whole year running mint,never missed a beat,and i have screwed everytime i rode it.awsome engine buddy

11-18-2008, 06:11 PM	#9 (permalink)
steve longstreth 1st Gear Member Join Date: Aug 2008 Posts: 175 My Mood:	Re: gpx 125 so if i end up buying the gpx 125 what would be the right pipe to use on it for the ct and if i dont run a oil cooler do i run a jumper like the 140s. and will it hurt it with no cooler

11-18-2008, 06:21 PM	#10 (permalink)
cdoublejj 3rd Gear Member Join Date: Oct 2008 Location: St.Joe MO Posts: 1,368 My Mood:	Re: gpx 125 does it even have the plumbing for an oil cooler? my lifan 125 doesn't have one and seems to be just fine... so far.

11-18-2008, 06:22 PM	#11 (permalink)
FastMC Sporting the Merkin Join Date: Mar 2004 Location: boston area Posts: 5,072 My Mood:	Re: gpx 125 We've been running a couple of them without coolers for a while now no problem on the street. The GPX 125s dont have the oil cooler jumper you just run it off the head if you want a cooler. Most any CT pipe will work. I have the Kitaco CT up pipe on mine and my buddy Butch got a pretty nice pipe from Staggs that was off an OGM I think (Pitster X4 type) it was practically a direct fit for around $75. Just needed a small jumper bracket to bolt up. I see if I can come up with a pic.

11-18-2008, 06:28 PM	#12 (permalink)
FastMC Sporting the Merkin Join Date: Mar 2004 Location: boston area Posts: 5,072 My Mood:	Re: gpx 125 Her'es mine...GPX125 with a TB 146 kit (no oil cooler) Kitaco pipe. I'll get a pic of Butch's pipe tomorrow. I'm sure most of the low pipes would work as well if you like those.

11-18-2008, 07:40 PM	#14 (permalink)
steve longstreth 1st Gear Member Join Date: Aug 2008 Posts: 175 My Mood:	Re: gpx 125 what pegs will fit . the honda set. off my old motor wont work on it i m guessing?

11-21-2008, 04:30 PM	#19 (permalink)
steve longstreth 1st Gear Member Join Date: Aug 2008 Posts: 175 My Mood:	Re: gpx 125 like the looks of thepipe fast mc. will a crf style pipe fit the ct. i like the kitaco but sadly cant afford a new one . trying to budget build the crf pipes look like they have a sharp bend and tha little guard dont realy like the way they look but seen some cheap

11-21-2008, 06:25 PM	#20 (permalink)
FastMC Sporting the Merkin Join Date: Mar 2004 Location: boston area Posts: 5,072 My Mood:	Re: gpx 125 This is basically the same pipe we put on Butch's CT but it says OGM on it. I'm sure there are lots of "Take-offs" out there for low $$. Sorry I havent got a pic of it yet maybe saturday I'll bring my camera to the shop. It's actually a pretty nice pipe and fit the CT well. You just have to make sure it's for the Honda style head and not the bigger YX motors.

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