TRX250r.org

Author Topic: LRD TRX 250B Pipes  (Read 40277 times)

Offline bnau267

LRD TRX 250B Pipes
« Reply #45 on: May 02, 2014, 12:10:32 AM »
Quote from: chadlwa;32875
I called Monday and 250B unchromed were gone

If they are gone then they are possibly gone for good.  It may be hand coned from here on out.

Offline chadlwa

LRD TRX 250B Pipes
« Reply #46 on: May 02, 2014, 09:59:40 AM »
Arlen said if he got some more folks interested and paid, they would make another run of them in a couple months
(250B non chrome)

Offline bnau267

LRD TRX 250B Pipes
« Reply #47 on: June 06, 2014, 08:25:02 PM »
Quote from: chadlwa;32902
Arlen said if he got some more folks interested and paid, they would make another run of them in a couple months
(250B non chrome)


Did he say how many = more folks?  I'd be interested.  It is either this pipe or a Duncan.

Offline sdxp787

LRD TRX 250B Pipes
« Reply #48 on: October 17, 2014, 07:32:28 AM »
I am reading all of this and am a little confused now.  I just purchased a 1987 cylinder that has a 295 sleeve in it.  It appears someone has attempted some port work , not sure who.  My questions are:  1. Will my stock carb feed this ?  2.  Do I need a BB pipe or will my FMF fatty that I have be ok?  I will be running this next year in an XC series.   I will be coming off of a 450R that I have raced XC for years now, so, I want all the torque that I can get out of this.  Don't really have the $$ to buy a 310 kit.  Any comments or recommendations are greatly appreciated.
2013 IXCR Senior B Class Champion
2007 TRX450R XC ready
2006 TRX450ER XC ready
1986 TRX250R (XC build in progress)
2007 Honda Rancher
2007 Yamaha Wolverine 450
1998 Suzuki LT80
1984 Yamaha PW50
2004 Honda R12X
1996 SeaDoo XP

Offline Tbone07

LRD TRX 250B Pipes
« Reply #49 on: October 17, 2014, 08:50:17 AM »
Quote from: sdxp787;44672
I am reading all of this and am a little confused now.  I just purchased a 1987 cylinder that has a 295 sleeve in it.  It appears someone has attempted some port work , not sure who.  My questions are:  1. Will my stock carb feed this ?  2.  Do I need a BB pipe or will my FMF fatty that I have be ok?  I will be running this next year in an XC series.   I will be coming off of a 450R that I have raced XC for years now, so, I want all the torque that I can get out of this.  Don't really have the $$ to buy a 310 kit.  Any comments or recommendations are greatly appreciated.

A 295 will not rerquire a BB pipe, especially if you're racing in XC.

I'd say a 37-38mm carb would be just about right for that motor.

Make sure you get that 295 OEM resleeve spec'd out by someone who knows them, they are very prone to blowing head gaskets. Did it come with an o-ring head?
LED Performance 350R
Laegers-JD Performance-GThunder-HLS-PEP-HiPer-GBC

RIP Laz

Offline Pumashine

LRD TRX 250B Pipes
« Reply #50 on: October 17, 2014, 11:04:30 AM »
Quote from: Tbone07;44674
A 295 will not rerquire a BB pipe, especially if you're racing in XC.

I'd say a 37-38mm carb would be just about right for that motor.

Make sure you get that 295 OEM resleeve spec'd out by someone who knows them, they are very prone to blowing head gaskets. Did it come with an o-ring head?
Thats some good advice. Not to mention the price of a BB pipe is as expensive as a new BB from ESR
Puma 408, Puma 431,  Pilot 412, Puma 431, Mini-tooth 486 Trx450r
89mm  Mini tooth Shearer in frame pipe chromed! With Cascade  Q

Offline sdxp787

LRD TRX 250B Pipes
« Reply #51 on: October 17, 2014, 03:26:05 PM »
It has a regular head gasket.  No o-rings. I can pull the studs and have the flatness checked.
2013 IXCR Senior B Class Champion
2007 TRX450R XC ready
2006 TRX450ER XC ready
1986 TRX250R (XC build in progress)
2007 Honda Rancher
2007 Yamaha Wolverine 450
1998 Suzuki LT80
1984 Yamaha PW50
2004 Honda R12X
1996 SeaDoo XP

Offline sdxp787

LRD TRX 250B Pipes
« Reply #52 on: October 17, 2014, 03:27:01 PM »
What is better, gasket or o-rings?
2013 IXCR Senior B Class Champion
2007 TRX450R XC ready
2006 TRX450ER XC ready
1986 TRX250R (XC build in progress)
2007 Honda Rancher
2007 Yamaha Wolverine 450
1998 Suzuki LT80
1984 Yamaha PW50
2004 Honda R12X
1996 SeaDoo XP

Offline 2ndmoto

LRD TRX 250B Pipes
« Reply #53 on: October 18, 2014, 01:42:40 AM »
Oring is better. Better heat transfer and holds up to pressure a bit better. A little back ground, most builders buy a 300 sleeve and slap it in a stock cylinder. Most aftermarket sleeves run such a large outside diameter that it cuts into the water jacket. Different metals, when heated, expand at different rates, causing small separations between the aluminum and iron. This allows coolant to run down the outside of the sleeve and into the bottom end. Also they run stock head studs, which have big flanges on them. This does not allow enough mating surface for a tin head gasket to work. And not enough material to cut an oring groove into.

Its been years since I've talked to Arlan about his 300 kit for oem cylinders, but he was having a sleeve made that didn't cut into the water jackets, and he used a non flanged stud. He could run the cast iron a bit further out at the top of the sleeve, this gave enough room to cut an oring groove.

That was a rock solid kit. Barry Hawk and Bill Balance won many gncc races and championships with that motor

Best regards
-Jason

Offline sdxp787

LRD TRX 250B Pipes
« Reply #54 on: October 19, 2014, 09:53:00 AM »
I will have to post some pics of my cylinder.  The head studs are not flanged.  I hope I didn't buy a turd....
2013 IXCR Senior B Class Champion
2007 TRX450R XC ready
2006 TRX450ER XC ready
1986 TRX250R (XC build in progress)
2007 Honda Rancher
2007 Yamaha Wolverine 450
1998 Suzuki LT80
1984 Yamaha PW50
2004 Honda R12X
1996 SeaDoo XP

 

Sitemap 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38