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-   -   How many hours on bottom end? (http://www.gasgasrider.org/forum/showthread.php?t=25140)

SS109 05-04-2020 10:38 PM

How many hours on bottom end?
 
Curious, how many hours do you run on a bottom end before you feel a rebuild is due?

(F5) 05-04-2020 11:06 PM

Well my 2007 ran the left hand main bearing in late 2018 so I rebuilt the crank as well. Don't have an hour meter so will have to estimate 'Lots'.

Gasser Nate 05-05-2020 12:36 AM

I used to do mine at around 300 hours. I have a mate with a 2018 that has 400 on it with no need as yet. But he is very smooth and doesn?t do high speed runs either.

Nocams 05-05-2020 06:01 AM

Very smooth? Thanks nate!
Sold my 2010 with just on 700 hrs.
Crank was fine.
Don?t rev the Christ outta it,well oiled filter and never lean.
Works for me.

gasser 05-05-2020 10:51 AM

Had over 900 hours on my 07 Gasser when I sold it and bottom end had never been touched. I went 200-300 hours between top end rebuilds.

swazi_matt 05-05-2020 03:16 PM

I did mine at 300hrs and the mechanic gave me the crank etc to keep as a spare since it was all still fine. I only did it because the bearings on that model were sealed, but by 300hrs the rubber seals had worn open so probably not something to worry about

And i drowned my bike a few times so had good reason to do it, but good airfilters and good oil seem to be the trick

Zman 05-05-2020 06:14 PM

Run good oiled air filter and quality premix oil and they last a long time.

I had 13yrs ~ 400hrs on my 2000 XC300 with the 327 big bore kit and the crank bearings started to feel and sound slightly noisy even though it was still tight. I swapped it out with a spare rebuilt bottom end I had. I would use the old one again (as it is) if I was in a pinch. I will swap the bearing when I get some free time.

jasont1532 05-21-2020 10:30 AM

My 2005 300 has over 70 hours. Still tight

dANbOT 05-21-2020 11:25 AM

I'm estimating my hours, but for the first two seasons my riding buddy counted about 200 hrs each on his meter... things have slowed down a little after that. I'd guess I have 700+ hours on my 2014 crank problem free

comeragh 05-21-2020 02:40 PM

About 21 years and god knows how many thousand miles on the road a few hare and hounds and a few mx tracks .
These bikes are well built .


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