Author Topic: 20r and 22r exhaust valves. (Read 1454 times)

RN37DD · « **on:** May 20, 2007, 08:22:06 AM »

I just checked the exhaust valves for my 20/22r motor and it looks like they're 22r valves. 112.4mm short and the valve head is 36.9 mm. I though 20r exhaust valves were 113.5mm long. Question well I have a problem running these valves? Anyone know how long the exhaust valves are that LCengineering has for the 20r? when you look it up it just says 20/22r. The machine shop here says the exhaust valves are the same.. I'm running old 22r rockers too. Anything Else I should check??

79coyotefrg · « **Reply #1 on:** May 20, 2007, 08:57:41 AM »

nope , looks like your good to go

RN37DD · « **Reply #2 on:** May 21, 2007, 01:05:09 PM »

yeah i think i'm going to run them. valve springs might be a little tighter but the cam lift is only .430 max and it might even help at high RPM..

79coyotefrg · « **Reply #3 on:** May 21, 2007, 01:15:41 PM »

actually it does help keep them tight, make sure your valve seats match the valve, the 20r seats must be removed and the 22r seats installed
gotta have a COMPETENT machine shop

79coyotefrg · « **Reply #4 on:** May 21, 2007, 01:16:26 PM »

btw the cam i have is a .460 lift

RN37DD · « **Reply #5 on:** Jun 02, 2007, 05:59:40 AM »

Too much $$ to put in the new valve seats at this time. going to order some over sized valve 20r from engnbldr.. That way I'll upgrade the intakes too. Think i'll try their cam also.

Author Topic: 20r and 22r exhaust valves. (Read 1454 times)

RN37DD

20r and 22r exhaust valves.

79coyotefrg

Re: 20r and 22r exhaust valves.

RN37DD [OP]

Re: 20r and 22r exhaust valves.

79coyotefrg

Re: 20r and 22r exhaust valves.

79coyotefrg

Re: 20r and 22r exhaust valves.

RN37DD [OP]

Re: 20r and 22r exhaust valves.

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	Author Topic: 20r and 22r exhaust valves. (Read 1454 times) 0 Members and 1 Guest are viewing this topic. RN37DD Crawler Guru Turtle Points: 0 Posts: 742 Member since Apr '07 20r and 22r exhaust valves. « on: May 20, 2007, 08:22:06 AM » I just checked the exhaust valves for my 20/22r motor and it looks like they're 22r valves. 112.4mm short and the valve head is 36.9 mm. I though 20r exhaust valves were 113.5mm long. Question well I have a problem running these valves? Anyone know how long the exhaust valves are that LCengineering has for the 20r? when you look it up it just says 20/22r. The machine shop here says the exhaust valves are the same.. I'm running old 22r rockers too. Anything Else I should check?? Logged 79coyotefrg Rock Ninja Gold Turtle Award Turtle Points: 1452 Posts: 22,633 Member since May '02 Solid axle Toys Rule ! ! ! Re: 20r and 22r exhaust valves. « Reply #1 on: May 20, 2007, 08:57:41 AM » nope , looks like your good to go Logged AR-TTORA founder 22R bored.060,LCE stage II race cam http://pure-gas.org/ 32/36weber, Marlin 1200 NON ceramic clutch, L52SHD+dualcase #2919, cable-locker, Yukon 5.29 gears, 35's, Allpro ebrake, front springs, and high steer, F150rears RIP Nitro 9-29-07 I sure miss him $I\'m Down$ MarlinCrawlerInc IS NOT affiliated with TrailGear in any way RN37DD [OP] Crawler Guru Turtle Points: 0 Posts: 742 Member since Apr '07 Re: 20r and 22r exhaust valves. « Reply #2 on: May 21, 2007, 01:05:09 PM » yeah i think i'm going to run them. valve springs might be a little tighter but the cam lift is only .430 max and it might even help at high RPM.. Logged 79coyotefrg Rock Ninja Gold Turtle Award Turtle Points: 1452 Posts: 22,633 Member since May '02 Solid axle Toys Rule ! ! ! Re: 20r and 22r exhaust valves. « Reply #3 on: May 21, 2007, 01:15:41 PM » actually it does help keep them tight, make sure your valve seats match the valve, the 20r seats must be removed and the 22r seats installed gotta have a COMPETENT machine shop Logged AR-TTORA founder 22R bored.060,LCE stage II race cam http://pure-gas.org/ 32/36weber, Marlin 1200 NON ceramic clutch, L52SHD+dualcase #2919, cable-locker, Yukon 5.29 gears, 35's, Allpro ebrake, front springs, and high steer, F150rears RIP Nitro 9-29-07 I sure miss him $I\'m Down$ MarlinCrawlerInc IS NOT affiliated with TrailGear in any way 79coyotefrg Rock Ninja Gold Turtle Award Turtle Points: 1452 Posts: 22,633 Member since May '02 Solid axle Toys Rule ! ! ! Re: 20r and 22r exhaust valves. « Reply #4 on: May 21, 2007, 01:16:26 PM » btw the cam i have is a .460 lift Logged AR-TTORA founder 22R bored.060,LCE stage II race cam http://pure-gas.org/ 32/36weber, Marlin 1200 NON ceramic clutch, L52SHD+dualcase #2919, cable-locker, Yukon 5.29 gears, 35's, Allpro ebrake, front springs, and high steer, F150rears RIP Nitro 9-29-07 I sure miss him $I\'m Down$ MarlinCrawlerInc IS NOT affiliated with TrailGear in any way RN37DD [OP] Crawler Guru Turtle Points: 0 Posts: 742 Member since Apr '07 Re: 20r and 22r exhaust valves. « Reply #5 on: Jun 02, 2007, 05:59:40 AM » Too much $$ to put in the new valve seats at this time. going to order some over sized valve 20r from engnbldr.. That way I'll upgrade the intakes too. Think i'll try their cam also. Logged