CRF 450 Timing Chain [Archive]

Chukkinsod

03-03-2009, 09:21 AM

Want to replace my timing chain with new one heard talk on here of going with a crf 450 chain (cheaper) getting ready to get one, not sure if year matters.

Honda#4

03-03-2009, 11:38 AM

The year doesnt matter, should be around 30 bucks.

ae13291

03-04-2009, 02:49 PM

is the crf 250r chain the same?

Pipeless416

03-04-2009, 02:55 PM

nope.

xcracer416

03-04-2009, 06:28 PM

i used an 02 crf450 chain, been raced hard and put up wet many of times. ive been through two top ends since the first install.

RaceinCircles

03-08-2009, 11:05 PM

Can someone post a link to a crf450 cam chain? I'm having trouble finding one for some reason...

Also maybe a new tensioner for 02ex? Thanks!

Honda#4

03-09-2009, 07:09 AM

Here's a link to the chain, found a place right in iowa for ya.

http://www.mcgrathpowersports.com/fiche_section_detail.asp?section=141670&category=Motorcycles&make=Honda&year=2002&fveh=3348

RaceinCircles

03-09-2009, 10:20 AM

Perrrrfect! Thanks Honda

Honda#4

03-09-2009, 02:20 PM

No problem bro

matt14c

03-09-2009, 03:59 PM

Is the price the only advantage to the CRF chain? If so whats the price differnce like a few bucks or what? Does anything else like tensioner or guides need to be replaced with it? Thanks

Pipeless416

03-09-2009, 05:20 PM

Originally posted by matt14c
Is the price the only advantage to the CRF chain? If so whats the price differnce like a few bucks or what? Does anything else like tensioner or guides need to be replaced with it? Thanks

the crf chain is a drop in replacement. the main advantage is strength.. it is significantly thicker than the stock chain, and it lasts a lot longer.

Honda#4

03-09-2009, 06:42 PM

These pics says it all

Honda#4

03-09-2009, 06:44 PM

2. The stock chain is on the right

RaceinCircles

03-10-2009, 01:24 AM

Do you recommend a new tensioner with the chain? My old one definintely stretched and I'm sure a new tensioner would help too...Just want an opinion from you smart guys :)

rob_990

03-10-2009, 04:58 AM

yea you might as well do it while your in there.

Chukkinsod

03-10-2009, 06:43 AM

Got the new chain in, a little job gettin to the old one out. One question concering cam re-installation, now that I have a new chain on, there is no reference line to line up the cam timing. What is the easiest way to ensure my timing is on.Cant afford another valve slap!

Honda#4

03-10-2009, 07:51 AM

Theres two marks on the cam sprocket that you line up with the very top of the top end, kinda hard to explain i'm sure someone can explain it better in detail.

Chukkinsod

03-10-2009, 10:32 AM

With the sprocket marks lined up with the top end all lobes are facing down . How will I know if the cam chain is 1 tooth off (Adv or rtd) before starting?

RaceinCircles

03-10-2009, 08:32 PM

^^^ Would also like to know this ^^^^

Pipeless416

03-10-2009, 09:09 PM

if its off 1 tooth, the lines will be lined up with the top of the cylinder head. another safe guard that you can make is once you think you have it in time, you can turn the crank with a socket, just like you're setting TDC. this way, you'll know if anything is interfering without causing any damage.

Chukkinsod

03-11-2009, 06:15 AM

What I've heard is lobes down and cam sproket lines horizontal (9 oclock, 3 oclock) with top end or cylinder. Not sure if that is accurate or not. I was going to rotate the motor w/socket first pipeless..only way i can be absolutely sure nothing hitting.

250xfreak

03-11-2009, 06:34 AM

Make sure your flywheel is at the T mark, all lobes on the cam facing down and make sure the lines on the cam sprocket line up with the top of the head surface. Spin the motor over a couple of times with a rachet and check to make sure your timing is correct.