88 yamaha 570
New member
ok so im rebuilding my first FULL srx motor, i heard about how the opticool head gasket helps with overheating, but ive also heard the head gaskets on these are just two rings? which is correct? and ive also heard Winderosa gaskets are thicker than stock ones and are not good? what is your advice for this? should i buy Winderosa gaskets, im buying a full motor rebuild gasket kit. and ive looked over my carb boots and reeds, reeds look fine should i reuse them? and there are two red carb boots and one black one? (inner lining). other than that carb boots are in good condition, should i reuse them? thanks for all the help, this is going to be a fun build...
Justin
Justin
I would use yamaha parts only. Especially with gaskets and seals. the SRX doesn't have a head gasket. its just o-rings. Should be able to re-use the reeds if they are in good shape.
YAMMIEGOD3:16
Active member
DON,T NEED ANYTHING AFTER MARKET HERE. GET TO YOUR YAMAHA DEALER AND GET WHAT YA NEED. OEM THE BEST. MIGHT BE MORE $$$ BUT THE BEST. 3:16 (yammie tony)
staggs65
Moderator
x3 on using the yamaha gaskets and seals. the opticool gasket is for vipers, srx doesn't have that cooling issue.
88 yamaha 570
New member
ok thanks for reply's about head gasket, i understand it now, and ill have to call to see if there oem, its not an actual yamaha dealer but i think he is still considered a dealer, let me call him. im gonna end up reusing reeds...
staggs65
Moderator
I usually re-use my head o-rings, and base gasket a few times. I just use a little copper spray on the base gasket. but I also know they were'nt leaking before and how many times I've re-used them. since you're dealing with an unknown engine I'd get new but if you tear back into it in the near future you can get away with it.
88 yamaha 570
New member
ok so i talked to this guy, they only sell winderosa, i personally have used winderosa every time ive rebuilt top ends or any kind of small engine such as a few 4 wheelers and 3 wheelers... its only gonna cost me 69.99 for a full rebuild kit, includes every gasket in the motor and all water pump and crank seals... i think i might go for this because im not too worried about the loss in compression as i might be having the heads shaved if there warped or anything...
ottawaair
New member
Why u ask if u gonna use junk no matter what these guys say. The winderosa base gasket is about .015" thicker than oem gasket. Not only a compression loss, but changes port timing also. It will change the dynamics of the engine. U can do what u want, but i been there, wondering why my sled just don't run like it used to, just don't have the snap it used to. Judging from all your posts on here, u better bring a good tow rope with u when u go out.
88 yamaha 570
New member
why exactly is that? ive been having my boss help me with the build also... hes got an 03 rx1 with a boosted apex motor in it, an 03 rev 800 with massive engine build... high compression, custom ports he did himself, aftermarket head, and about 4000 miles on the build... he ONLY uses winderosa, i was just wondering what you guys think, honestly id rather run them and save the extra 50 dollars than buy oem... im not too worried about .08 larger than oem. not to mention i don't know any oem dealers in my area, and this isn't my first time doing this stuff, just my first full rebuild. ive been a mechanic working on and building cars for several years nowottawaair said:
88 yamaha 570
New member
and what if i were to buy a base gasket oem and just buy winderosa gaskets for the rest? what else is wrong with winderosa? ive only heard of the base gaskets being thicker
ottawaair
New member
that would b fine. It's just that we all have found oem parts to b better quality, so that's what we usually get.
88 yamaha 570
New member
well im going to trust my boss on the winderosa being fine for the rebuild, but im gonna go with you guys because i looked up specs on winderosa site and there base gasket is .030 and squishes to .018 or something and i seen someone who used winderosa full engine gasket and had 100 across the board for compression, switched back to his used gasket and got 140 XD so im not gonna mess with the base gasket, but i will trust the rest of the kit, might just buy oem off ebay for 20 dollars just the base gasket. what should i be looking for if i decide to reuse my base gasket, as far as i know its original and has not been used over againottawaair said:
88 yamaha 570
New member
ok so here is another question that could save me money... i have 5 oem pistons here, between two motors the kid had... 2 are blown, 3 look in good shape, should i have them checked out to see if there within spec and just buy new rings? or am i better off buying new pistons anyways? sled had 4000 miles on it
88 yamaha 570
New member
ok maybe not, im just gonna buy all new, i only have 1 good wrist pin bearing, and for the price for new bearings, wrist pins and rings it comes to like 60 a piston, and new pistons are 69 with wrist pin and bearings and clips...
100lbs is crap for compression. I would be rebuilding my engine long before it got that low. If there was a gasket that caused that, I wouldn't be using it.
JM $0.02
JM $0.02
88 yamaha 570
New member
ya im gonna buy an oem base gasket and just save the winderosa gasket just in casephazerguy said:
88 yamaha 570
New member
ya im gonna buy an oem base gasket and just save the winderosa gasket just in casephazerguy said:
Devilin AblueDress!
New member
Personally I look at things in a longevity point of veiw. Have you had either of the cranks checked out? If the crank your using has a bad bearing (especially the middle one) you can put the ultimated gold platted every thing into it or the bargain bin junk and you will be tearing it apart again real soon!
88 yamaha 570
New member
i had my boss look it over and it is perfectly fine, aside form pulling it apart and looking at it its as good as its gonna get...
ottawaair
New member
this is the wrong sport to save money and cut corners. Unless u like walking home.