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Author Topic: Arlan Lehman Talks About 350 Power Valve Cylinder Porting Video  (Read 3690 times)

Offline ledperformance

[video=youtube;X_WfxWfpp3c]http://www.youtube.com/watch?v=X_WfxWfpp3c[/video]

Offline Burns363R

Arlan Lehman Talks About 350 Power Valve Cylinder Porting Video
« Reply #1 on: August 23, 2013, 03:43:55 PM »
Simply awesome..  I love watching this stuff.
TRX 363R 02- Laeger Narrow Frame/CR500 Link, Motowoz Suspension, Roll Design +4 LT Arms,RPM Dominator +4 axle, LED 363 MX, LED 350G Pipe, 38 A/S CR Ignition

TRX 370R 86- Stock frame(gusseted)LRD Sub Fram,ISF-No Link Swinger, JD MGC LT Arms) Motowoz Shocks, LED 370/350D pipe, 38 A/S Carb, CR Ignitio

Offline Vader

Arlan Lehman Talks About 350 Power Valve Cylinder Porting Video
« Reply #2 on: August 23, 2013, 04:44:39 PM »
These are cool videos.  Makes me want to pull out my own "hammer and chisel" and experiment with 2 stroke porting on some old cylinders.
85 Missile 310R Duner
86 ATC 330R Duner
88 TRX 350R Duner
06 LTR 535 Duner

Offline fearlessfred

Arlan Lehman Talks About 350 Power Valve Cylinder Porting Video
« Reply #3 on: August 23, 2013, 05:21:36 PM »
its grand to be banned and be able to see a real buider share his knowledge.thanks led

Offline C-Leigh Racing

Arlan Lehman Talks About 350 Power Valve Cylinder Porting Video
« Reply #4 on: August 26, 2013, 08:41:33 PM »
I cant work fast as Arlan, I have to feel it with my insides until its right, because its part of me when I get done.
I learned a new trick though from the video, never used my legs to hold the jug, I'll have to try that out.

Thanks Arlan for the video, maybe now some will see how much work it is to do a cylinder right.

Was said some time back, when you open up the Boysene ports big like Arlan is doing in that video, it messes up the intake flow to the bottom end, well if it does, then LED, CT Racing, a bunch of others & myself have really messed up some cylinders. Not many leave my shop you cant get your thum down in to.
Neil
C-Leigh Racing, in memory of Caraleigh Pritchard
Race team for 2015
Chuckie Creech #25 TRX450R, Pro, Pro Am, Pro Am Unlimited
Andrea Creech # 25 TRX450R, Womens (National ATVA EDT)
Andrea Creech #33 TRX350R, Womens (local EDT)

If it aint got a hot weed eater 2 stroke engine, all its good for is a pit bike

Offline Burns363R

Arlan Lehman Talks About 350 Power Valve Cylinder Porting Video
« Reply #5 on: August 26, 2013, 09:06:28 PM »
Your right Neil.  All the engines i have ported, i have opend up those two ports going to the bottom end.  They always start about pinky finger and i when im done i can get my thumb down them.  I have always had good results with that.
TRX 363R 02- Laeger Narrow Frame/CR500 Link, Motowoz Suspension, Roll Design +4 LT Arms,RPM Dominator +4 axle, LED 363 MX, LED 350G Pipe, 38 A/S CR Ignition

TRX 370R 86- Stock frame(gusseted)LRD Sub Fram,ISF-No Link Swinger, JD MGC LT Arms) Motowoz Shocks, LED 370/350D pipe, 38 A/S Carb, CR Ignitio

 

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