| Author | Message | ||
     Buellbozo |
Just wonderin'... Will a cam cover from a 98 engine fit my 99 s3t? Particularly concerned with oil passages and cam bearings.Thanks!  | ||
| Chasespeed |
Should, the cases are the same for all tubers..the only differences that I am aware of, are the cams in X1s(and S3's?), and the T-storm heads on 99 and up models... Other than that, shouldnt be any different... Oh and teh cams for X1s, are bolt in, so there isnt any need to change anything there... Chase | ||
| Leftcoastal |
Yup - it'll fit right up to the cases, case bearings and oil passages. There is one thing that could get you into trouble is cam spacing. I'm sure there are a lot of 'webbers that know more about this than me, but the cams are fit (at the factory) to the cam covers and there is some variation in spacing between the cam gears, and in sizes of the gears themselves. This is made up for by selectively fitting the cams to the cam cover and to each other to maintain correct tolerances. Fitting cams that are too tight, though they "seem OK" WILL cause catastrophic failure up the line, usually sooner than later. What can happen, for example, is that the cams will run very hot, maybe even to the point that they turn 'blue' from the heat, and seize, shearing the key on the pinion shaft, allowing the cam timing to suddenly change and resultant piston/valve collision. The Buell motor (or maybe your wife's 1991 XL) will cease to run immediately and will leave you (well...HER, anyway) uncontentedly sitting on the side of the road, outside of Wrightwood, CA, on Easter Sunday. Just an example, mind you. AL | ||
| Buellbozo |
WOW! Thank you both. I prefer polished cases to the black on my 99s3t.just copped a new polished primary on e-bay.i understand the "fit" issues,and will have to delete the timing case from my watch list.appreciate the shared experience.maybe i might need to look at the products of the Andrews co. after all.thanks again. | ||
| Blake |
No mods to the cover itself as far as I know. Though I believe that there are different gaskets due to the revision to the oil scavenging circuit in '98. Be careful to ensure you obtain the correct one. | ||
| Leftcoastal |
FYI - the 'example cams' in my above post were Andrews cams, N-4's if I recall. They were bought from a local dealer and I just "threw 'em in" to the 91 XL motor without any attention to the fitment of the cams to the cover. (Like it says in my profile, sometimes my mechanic is an idiot.) I have a good friend that is a magazine editor, and he sent the cover and strangely blue cams to Andrews. They sent the cover back with a shiny new set of cams, and with new bushings installed too! In my opinion, Andrews went far beyond what would normally be expected, as it really was not any fault of their product or their quality. Of course, it is always good to have friends in high places in the industry, too! I replaced the pistons and valves, guides etc. and the bike was back on the road - still is as far as I know. There is probably a simple way to establish if the cams are within tolerance to use that other cover on your S3T, maybe Andrews could let you know how, and what measuring devices would be needed, or maybe someone here knows - Did ya check KV? AL | ||
| Buellbozo |
I have indicators ,mics and such from my working days. I need to learn the KV search functions. I'm thinking careful i.d./o.d. measurements + maybe assembly with plastigage to check gear teeth fit. It's great to own a machine where this sh*t matters...unlike say,a Maytag. Also plan on replacing oil pump drive gear as per BadWeb suggestions. Thanks again! greg |
