Motor Checks

[zcarlson12]

I've ran about 15 gallons of fuel through my R. What are some things I should check to make sure everything is sound? Ring gap? Reeds? Plug looks good and it's running great but I'd rather check something now than find out after it breaks. The only thing I haven't touched is everything in the water pump.

Background, all done in July of 2013:
89 cases with new bearings, gaskets and seals
ESR 310 cylinder on 72.25 bore with new ESR piston kit, spacer and race gas dome
Hot Rod 89 stock stroke crank
Boyesen Rad Valve
38mm A/S, 52 pilot, 178 main, middle clip, stock needle
VP 110 at 40:1 with Klotz R50
OEM plates, fibers and springs with 89 update always Honda HP in the cases
UNI filter cleaned and oiled after every ride or race
Hinson basket, needle bearings, hub, washer, nut replaced in May of this year
Counter balancer bearings also changed in May of this year

[aberegg05]

First thing I would check is comp.

[PORTED R]

15 gallons .....
Just check compression ,make sure bolts are tight and airleaks

If u got a good builder ,or the user built it right ,should not be too many worries

[udontknowme]

15gal aint nothing. i burn through 5gal in one day at the dunes.  if theres no visible leaks and runs good i would keep on truckin

i dont see what compression check will do at this point since it probly wasnt checked originally. and even then, how much psi loss eqauls a topend replacement ?  ya i never cared much for compression checks. i think your better off doing inspections  at regular intervals like 100hrs for example. if nothing worn throw it back together

[zcarlson12]

Alright great. I didn't think that was a lot of time but I wanted to be sure. That's why I like coming on this site. Honest answers to any and all questions.

[udontknowme]

you might hook up a hr meter and keep track of things that way. a casual rider that only does 20 or 30hrs a year should be able to go several seasons without touching anything. ive found that judging by fuel consumption meens hardly nothing. if you ride sand you have the throttle 1/2 to full all the time. trail riding is more like 0-1/2 throttle opening. both engines may get the same amount of run time but one uses alot more fuel. thats why i dont really judge anything by fuel consumption

[pinned250r]

Compression and air leaks are the only checks you need to do man. Then run the piss out if it until she blows! I finally have an engine that's lasted me a few years, it's pretty nice when things get figured out!

[udontknowme]

Compression !

where should it be after 15gal ? where should it be when everything is new ? when the pistons worn out where should it be ? do you know your gauge is correct ? do you know how to calculate for altitude ?  at what speed should the engine be kicked over ?  what if the cylinders ported ?

nothing agaisnt you personally but i have to shake my head at all this static compression stuff and the people that rely on it religiously like theres nothing else important.

[pinned250r]

where should it be after 15gal ? where should it be when everything is new ? when the pistons worn out where should it be ? do you know your gauge is correct ? do you know how to calculate for altitude ?  at what speed should the engine be kicked over ?  what if the cylinders ported ?

nothing agaisnt you personally but i have to shake my head at all this static compression stuff and the people that rely on it religiously like theres nothing else important.

Clearly you forgot what forum you were on, .net would need this explanation, not so much here. Obviously uccr would be the best, not all know how or have what's needed for it.
The OP asked what to check, honestly, I wouldn't check anything other than the plug because it's a waste IMO, but he wanted something to check.

I have seen you do this on multiple occasions, take your smartass comments elsewhere. Grow up while you're there.

[udontknowme]

nothing of that was smartass and not a poke at you either like i clearly mentioned. if you took it like that then so be it but it wasnt the intention

i encourage and recomend everyone to think beyond what you may have read on the other site and not only that site but other sites across the web. alot of bullshit info out there. if you want to learn about stuff jerry hall wouldnt be a bad guy to ask. probly forgot more than most people know and unlike some other so called 'builders' , you wouldnt get any smoke and mirrors answers to cover up the answer they really found on google.but enough of that.

i have yet to find much use for a cranking compression number. when you think of all the variables involved what can you do with that psi number. alot of guys on other sites use it to determine if the engine needs high octane fuel. if you know nothing about the engine other than its cranking compression i dont see how that tells anything about what fuel to use unless it was some rediculous number well over 200psi

some people use it to determine if the top end is worn out. on a used bike this is a useless test imo. your better off tearing it apart and checking clearances and such. or better yet just throw in a new piston since its cheap. if you were to check pressure on a new engine and check again after 2 seasons for example and the pressure is pretty low then you might have a indication to atleast take it apart and have a look. but still a gauge wont replace good old fashion inspection with measuring tools

this is only my thoughts. regardless what i or anyone else says there will always be people who are convinced they need a new psiton because their made in china gauge says so