Planet Minis

moto234 · 02-11-2009, 07:52 PM

can i use newer cfr50 rockers and rocker pins in a atc70 head?

dirtbkr188 · 02-11-2009, 08:22 PM

Rocker arm shafts - yes
Rocker arms - no

moto234 · 02-12-2009, 12:17 AM

ok thanks

FastMC · 02-12-2009, 12:29 AM

Timaaayyy knows his stuff !!!

firepower354 · 02-12-2009, 05:46 AM

TimTim, what aboot the later 70 ones?

dirtbkr188 · 02-12-2009, 06:20 AM

Just did a look-em-up, and the rockers from the '91-'94 CT70, XR/CRF70, and '79-'91 Z50R rockers are all the same OEM Honda part #14431-035-020, but only list the ATC70 A, ATC70K1, and '78 ATC70 as the only ATC models using the same rockers...

The part #14431-036-812 rocker list includes the '78-'85 ATC70, the '86-'87 TRX70, the SL70-SL70K1, and the XL70-XL70K1.

firepower354 · 02-12-2009, 06:25 AM

Hmmmm. The late CRF50 ones have a tiny cam follower foot, and I think, a little different bend to match the small base-circle late cam.

If I get in to the garage, I'll try some parts swapping.

dirtbkr188 · 02-12-2009, 06:36 AM

yep, here's a couple pics...

moto234 · 02-12-2009, 11:35 AM

ah now i see why they wont work, well cool thanks. i was just asking cause i was gonna try to buy some off dratv but i coulda sworn the same rockers were in the crf and atc setions

LoudFastUgly · 02-12-2009, 04:13 PM

Z50a, early ct70 also use same rocker as atc70. Got lots if you'd like some. Pay postage and they're yours.

moto234 · 02-12-2009, 11:32 PM

ok sweet! im gonna send you a pm

02-11-2009, 07:52 PM	#1 (permalink)
moto234 3rd Gear Member Join Date: Apr 2008 Location: CHICO CA Ukiah CA MENDO 707 Posts: 2,782	atc70 rockers can i use newer cfr50 rockers and rocker pins in a atc70 head?

02-11-2009, 08:22 PM	#2 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,972	Re: atc70 rockers Rocker arm shafts - yes Rocker arms - no

02-12-2009, 12:17 AM	#3 (permalink)
moto234 3rd Gear Member Join Date: Apr 2008 Location: CHICO CA Ukiah CA MENDO 707 Posts: 2,782	Re: atc70 rockers ok thanks

02-12-2009, 12:29 AM	#4 (permalink)
FastMC Sporting the Merkin Join Date: Mar 2004 Location: boston area Posts: 5,072 My Mood:	Re: atc70 rockers Timaaayyy knows his stuff !!!

02-12-2009, 05:46 AM	#5 (permalink)
firepower354 Advertiser Join Date: Oct 2006 Location: Flint MI Posts: 11,002 My Mood:	Re: atc70 rockers TimTim, what aboot the later 70 ones? __________________ If it has my name on it I did it;) FirepowerMinis.com Custom FPM parts and engines. Parts and service for all makes. Honda Trail Bikes parts and accessories. Pitster/Piranha/Thumpstar bikes, parts, engines and accessories.

02-12-2009, 06:20 AM	#6 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,972	Re: atc70 rockers Just did a look-em-up, and the rockers from the '91-'94 CT70, XR/CRF70, and '79-'91 Z50R rockers are all the same OEM Honda part #14431-035-020, but only list the ATC70 A, ATC70K1, and '78 ATC70 as the only ATC models using the same rockers... The part #14431-036-812 rocker list includes the '78-'85 ATC70, the '86-'87 TRX70, the SL70-SL70K1, and the XL70-XL70K1. Last edited by dirtbkr188; 02-12-2009 at 06:30 AM.

02-12-2009, 06:25 AM	#7 (permalink)
firepower354 Advertiser Join Date: Oct 2006 Location: Flint MI Posts: 11,002 My Mood:	Re: atc70 rockers Hmmmm. The late CRF50 ones have a tiny cam follower foot, and I think, a little different bend to match the small base-circle late cam. If I get in to the garage, I'll try some parts swapping. __________________ If it has my name on it I did it;) FirepowerMinis.com Custom FPM parts and engines. Parts and service for all makes. Honda Trail Bikes parts and accessories. Pitster/Piranha/Thumpstar bikes, parts, engines and accessories.

02-12-2009, 06:36 AM	#8 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,972	Re: atc70 rockers yep, here's a couple pics...

02-12-2009, 11:35 AM	#9 (permalink)
moto234 3rd Gear Member Join Date: Apr 2008 Location: CHICO CA Ukiah CA MENDO 707 Posts: 2,782	Re: atc70 rockers ah now i see why they wont work, well cool thanks. i was just asking cause i was gonna try to buy some off dratv but i coulda sworn the same rockers were in the crf and atc setions

02-12-2009, 04:13 PM	#10 (permalink)
LoudFastUgly 2nd Gear Member Join Date: Aug 2008 Location: GTA, Ontario, Canada Posts: 383	Re: atc70 rockers Z50a, early ct70 also use same rocker as atc70. Got lots if you'd like some. Pay postage and they're yours.

02-12-2009, 11:32 PM	#11 (permalink)
moto234 3rd Gear Member Join Date: Apr 2008 Location: CHICO CA Ukiah CA MENDO 707 Posts: 2,782	Re: atc70 rockers ok sweet! im gonna send you a pm

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