F4i - Main Forum Main F4i discussion board

Timing a 02 F4i

Old 02-09-2011, 05:11 PM
R1der02's Avatar
Thread Starter
Join Date: Aug 2010
Location: St. Charles, Il.
Posts: 63
Default Timing a 02 F4i

so i have to time my engine and i got it all back together but it wont turn all the way around. i thought i had the marks lined up right but now im not sure. does anyone know the exact marks that have to be lined up? ive searched and all i find is that i have to line them up but thats all they say. theres a T with a mark by it and an F with a mark by it and there was also a mark by itself all of these are on the crank. PLEASE HELP!!!!!
Old 02-10-2011, 07:48 AM
Join Date: Jul 2005
Location: Bostic, NC
Posts: 1,811

Have you already tightened the cam hold down plate?? If so and you're trying to rotate the engine with it out of time, you're smacking the pistons into the valves... not good!! The cam hold down plate and cams must be removed so that all the valves are closed, then rotate the crank to the correct position. The T and F marks stand for timing and firing. You want to line the little mark next to the T up with the groove on the clutch cover, like this

Name:  DSC01875.jpg
Views: 2371
Size:  67.9 KB

Then install the exhaust cam, and line up the little line under the EX mark so it's flush with the surface of the head. Remember both the intake and exhaust cams use the exact same cam gear, so both have marks for intake and exhaust cam timing, be sure and use the appropriate mark. It should look like this when it's all tightened down.... might take a few tries to get it right, it can be tricky as they turn slightly when you tighten them down

Name:  DSC01866.jpg
Views: 1984
Size:  58.5 KB

Then install the intake cam and line up the line under th IN mark with the head

Name:  DSC01868.jpg
Views: 2721
Size:  63.1 KB

Then TORQUE all the bolts on the cam hold down plate in the EXACT numbered sequence stamped on the plate. Not doing this WILL result in a broken camshaft

Name:  DSC01871.jpg
Views: 1751
Size:  54.4 KB

And it should look like this when you're all done

Name:  DSC01874.jpg
Views: 2886
Size:  66.2 KB

And of course the crank should still be lined up at the T mark. Install CCT, then rotate the engine several times (usually takes 4 complete revolutions) and make sure the timing marks still align as they should, and you're all set
Old 02-10-2011, 10:29 AM
R1der02's Avatar
Thread Starter
Join Date: Aug 2010
Location: St. Charles, Il.
Posts: 63

Hey thanks, you know its funny cuz i was looking all over the internet last night for an answer and i finally stumbled upon your pics and thats what helped me the same pics that you just put up here. Now its turns like it should and the rest is going together today hopefully, any other advice?
Old 04-11-2012, 01:44 PM
Junior Member
Join Date: Apr 2012
Posts: 4

how did your assembly go i am having the same problems, my bike startd but was backfiring and missing bad.. does this sound like the timings off?
Thanx and appreciate any help
Old 04-11-2012, 02:16 PM
mnguyen84's Avatar
Senior Member
Join Date: Apr 2008
Location: CA, USA
Posts: 421

i'm getting ready to attempt this. sounds scary.
Related Topics
Thread Starter
Last Post
CBR 600F2
01-02-2010 04:37 PM
CBR 1000F "Hurricane"
02-03-2008 03:58 AM
CBR 600F4
08-16-2007 02:59 AM
General Tech
11-04-2006 11:54 PM
General Tech
07-19-2006 02:46 AM

Thread Tools
Search this Thread
Quick Reply: Timing a 02 F4i

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.