Planet Minis

madmartigan · 05-21-2007, 03:30 PM

if i have an old roached out ct70 engine that barely runs and i have a whole new top end and crank and cam from a new crf70, can i rebuild with these parts? thanks in advance

madmartigan · 05-21-2007, 04:03 PM

quick help!

melloyello · 05-21-2007, 04:24 PM

I think the rod length is different between the two. I am sure someone will chime in and tell me I am wrong though.

BAJAZBR · 05-21-2007, 05:20 PM

i read in another thread that the 1982 model and the newer 90s ct 70s are top end compatable with the newer crf 70s

madmartigan · 05-21-2007, 08:02 PM

thanks guys i actually have the rods for the crf70 topend too. maybe i could change those out and it will work. but if anybody has good knowlege of this please fill me in.

Motarded · 05-21-2007, 08:05 PM

What year ct70? 6 volt or 12 volt?

madmartigan · 05-21-2007, 09:53 PM

Quote:

Originally Posted by Motarded

What year ct70? 6 volt or 12 volt?

i think its a 72 idk what volt. that is my only qualm about selling that top end, motarded. i forgot that i had this engine that i was going to rebuild.

Motarded · 05-27-2007, 09:21 PM

If it is a 72 it is 6 volt.

rford426 · 05-27-2007, 09:24 PM

hey whats the difference between the ct70 and the sl70??? i have a early 70s sl70 in storage still runs great and all just needs some TLC

ncdiver · 05-29-2007, 10:09 AM

The SL70 is a street legel one, bult for driveing around town. The CT70 was built as a trail on off road bike. Basicly the same bike one is built from street perspective, the other from a trail perspective. The earlier the model the more it is worth, hard to find old ones. The 80s are not common but around.
Hope this helps......

madmartigan · 05-30-2007, 04:56 PM

Quote:

Originally Posted by Motarded

If it is a 72 it is 6 volt.

so will i need a new stator? probly not?

dirtbkr188 · 05-30-2007, 07:15 PM

Yes, you will need a 12V CDI-compatible stator, the old points-style one from the CT won't work at all

05-21-2007, 03:30 PM	#1 (permalink)
madmartigan Join Date: Mar 2006 Location: ftlauderdaleflorida Posts: 122	ct70 engine rebuild??? if i have an old roached out ct70 engine that barely runs and i have a whole new top end and crank and cam from a new crf70, can i rebuild with these parts? thanks in advance

05-21-2007, 04:03 PM	#2 (permalink)
madmartigan Join Date: Mar 2006 Location: ftlauderdaleflorida Posts: 122	Re: ct70 engine rebuild??? quick help!

05-21-2007, 04:24 PM	#3 (permalink)
melloyello 3rd Gear Member Join Date: Jan 2006 Location: williamston, nc Posts: 3,492	Re: ct70 engine rebuild??? I think the rod length is different between the two. I am sure someone will chime in and tell me I am wrong though.

05-21-2007, 05:20 PM	#4 (permalink)
BAJAZBR "Minibikedike" Join Date: Jun 2006 Location: san diego Posts: 284 My Mood:	Re: ct70 engine rebuild??? i read in another thread that the 1982 model and the newer 90s ct 70s are top end compatable with the newer crf 70s

05-21-2007, 08:02 PM	#5 (permalink)
madmartigan Join Date: Mar 2006 Location: ftlauderdaleflorida Posts: 122	Re: ct70 engine rebuild??? thanks guys i actually have the rods for the crf70 topend too. maybe i could change those out and it will work. but if anybody has good knowlege of this please fill me in.

05-21-2007, 08:05 PM	#6 (permalink)
Motarded 3rd Gear Member Join Date: Aug 2004 Location: RIVERCIDE SO CAL 951 Posts: 4,972	Re: ct70 engine rebuild??? What year ct70? 6 volt or 12 volt?

05-27-2007, 09:21 PM	#8 (permalink)
Motarded 3rd Gear Member Join Date: Aug 2004 Location: RIVERCIDE SO CAL 951 Posts: 4,972	Re: ct70 engine rebuild??? If it is a 72 it is 6 volt.

05-27-2007, 09:24 PM	#9 (permalink)
rford426 3rd Gear Member Join Date: Sep 2005 Location: Broken Arrow, Oklahoma Posts: 986	Re: ct70 engine rebuild??? hey whats the difference between the ct70 and the sl70??? i have a early 70s sl70 in storage still runs great and all just needs some TLC

05-29-2007, 10:09 AM	#10 (permalink)
ncdiver PM Newbie Join Date: Mar 2006 Posts: 24	Re: ct70 engine rebuild??? The SL70 is a street legel one, bult for driveing around town. The CT70 was built as a trail on off road bike. Basicly the same bike one is built from street perspective, the other from a trail perspective. The earlier the model the more it is worth, hard to find old ones. The 80s are not common but around. Hope this helps......

05-30-2007, 07:15 PM	#12 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,970	Re: ct70 engine rebuild??? Yes, you will need a 12V CDI-compatible stator, the old points-style one from the CT won't work at all

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