Titanium Posted July 10, 2004 Report Posted July 10, 2004 About a year ago I bought my dream quad...a 97 banshee in all the right colors with plenty of mods. It is a long story i don't feel like telling but basicly it has been in and out of 4 shops for the last year, and has under 2 hours of me riding it Just lately have we found the problem, the stator is fried and one cylinder has dropped 30 PSI compression. Rather than have a shop fix it i've decided to tackle this myself (saves me well over $800 in labor) The mod list is in my profile, and i'm led to beleive that the trinity head dome is the source of my compression woes (brand new pistons and rings). If this checks out, I'll be replacing the following... Trinity Head dome ($???) Stator ($300) Coil ($30) Wires ($20 each) Now this wounds more like a story than a question but i'd like all your inputs on this, and if you have any ideas on where the compression could be lost, if i should replace anything else, anything like that. Thanks in advance Quote
hamuel Posted July 10, 2004 Report Posted July 10, 2004 Banshee 200 watt Stator Assembly with Adjustable timing plate for 185+shipping at rickystator.com yah can pickup your new coil there aswell for $55 with caps. if your compression is that low and your not leaking/burning coolant just replace the pistions and get it done with. while yah got the jugs off have the check out the crank to make sure it's with in specs(probly out of specs). if it's out of spec's your going to need to go into the bottem end. thats a whole different story Quote
frocashmoney24 Posted July 10, 2004 Report Posted July 10, 2004 i was gonna say the same thing, rickystator.com is the shit, for compression, maybe u just broke a ring or something, but if it scarred the jug your gonna have to bore it, if one of the domes is messed up, hit up ebay for a set of domes or just one, good luck man Quote
cdcoxwell Posted July 10, 2004 Report Posted July 10, 2004 Check head gasket first before messing with the pistons. Usually the head gasket is the first to go. Usually, not always. Normally when compression is lost it is dew to damage head gasket or crankseal. If it were the crankseal you would have anti-freeze in your oil and so-forth. A shee can crank on around a 100psi, not all of'em, most of'em. Mine only has 110psi. Keep us posted. Quote
Titanium Posted July 10, 2004 Author Report Posted July 10, 2004 The pistons and rings were replaced less than an hours worth of riding ago The cylinders were also bored because they were scored That is why i assume the domes, as well it doesn't have a headgasket(it is a metal ring seal, i believe this may be chipped/bent/scored), and IS burning coolant. Thanks for the stator link, you saved me a LOAD of money I'll see if they have the domes i need on e-bay Quote
hamuel Posted July 11, 2004 Report Posted July 11, 2004 order a set of new o-rings for the head. seeing it's a after market head atlest thats what i've heard Quote
Titanium Posted July 11, 2004 Author Report Posted July 11, 2004 O-rings = brand new, as well that would LEAK coolant, but this has lost compression (no o-ring in between head and cylinders, just inside the head) UPDATE: Got it out of the (hopefully) last shop it'll ever see today. Took it home and began testing components. First tested the stator, it was all open, as expected. Then took the coil off and tested the harness side, it was good, then the plug side, it was good. Tested the plug caps and they seem to be bad, as the meter pegged infinite ohms. Seems odd that BOTH caps would be dead. Anyone have a good place for good caps? Checked the kill switch, it was good, checked the key switch, it was good. I assume the caps and stator are the source of my spark woes, and will be ordering the stator assymbly from Ricky Stator tomorrow. Once I have spark I beleive it will run (the bad cylinder STILL has more compression than a stock banshee) After that I will replace the domes and jet it...should take some time Quote
superchicken Posted July 11, 2004 Report Posted July 11, 2004 O-rings = brand new, as well that would LEAK coolant, but this has lost compression (no o-ring in between head and cylinders, just inside the head) Once I have spark I beleive it will run (the bad cylinder STILL has more compression than a stock banshee) there should be an o-ring at the bottom of each dome.sealing it to the cylinder.if your burning coolant youve got a leak some where. what cc domes are you running cause if you lost 30lbs and still more than a stock banshee,it sounds like you have over 160-170 in the good cylinder,have you been running VP or some other race gas?thats kinda the borderline of compression for high octane. Quote
banshee boy 98 Posted July 11, 2004 Report Posted July 11, 2004 please explain how a crank seal if it is bad will let coolant in to the trans oil??? coolant doesnt go any lower in the motor that the bottom of the cylinder!! this guy needs to do a leak down test to find the leak. Quote
Titanium Posted July 11, 2004 Author Report Posted July 11, 2004 Nope... Check out the Trinity Stage IV head...trinityracing.com No o-rings between cylinders and head Ordering the ignition stuff today Yes, i beleive the compression is around the 150-160 mark in the good cylinder (i didn't do the compression check myself, it was done by the shop. HE said that the bad cylinder still has more compression than stock, so that wouldn't stop it from running, just cause poor performance) ...What about leaking into the tranny oil? I never said anything about that... How can i do a leakdown test? Quote
Titanium Posted July 11, 2004 Author Report Posted July 11, 2004 what cc domes are you running cause if you lost 30lbs and still more than a stock banshee,it sounds like you have over 160-170 in the good cylinder,have you been running VP or some other race gas?thats kinda the borderline of compression for high octane. I don't remember right now, but as soon as I pull the head (maybe today?) I'll check what they are and get pictures of the assembly for you Quote
superchicken Posted July 11, 2004 Report Posted July 11, 2004 im just wondering why you had it in 4 shops in the past year?that link to trinity,showed the pic of the top of the head,i hope your not thinking thats the bottom. best thing you can do is pop off the head make sure theres an oring where they lay into a small slot,there should be one on the bottom plate around the outside edge,two on the top plate around each spark plug hole,under each dome andaround the underside of each cylinder.that is if its machined the same way as a prodesign head.but the proof is in the pudding,youll find out if its there once you take it off. Quote
slow2_2 Posted July 11, 2004 Report Posted July 11, 2004 Tested the plug caps and they seem to be bad, as the meter pegged infinite ohms. Seems odd that BOTH caps would be dead. Anyone have a good place for good caps? If I'm noy mistaking, the plug caps have a gap in them for the spark to jump across. The ohmmeter should be maxed out when checking them. Quote
Titanium Posted July 12, 2004 Author Report Posted July 12, 2004 Like I said its a long story...i'll shorten it best as possible Got quad- Ran Rich Took to shop #1 - said head was bad (they may ahve been right after all) Shop #1 puts STOCK head on b&s motor... = Starts burning and leaking coolant out the studs, studs stripped Shop #2 retaps studs, stock head = stripped again Shop #3 retaps studs, replaces o-rings, pistons, rings, hones cylinder walls Ran like at first, still rich, stopped starting Shop #3 Jets carb, still won't start Shop #3 sees bad stator, wants $500 for stator + Labor (f*ck that) Shop #4 Does compression check, I take it out frustrated because they want an $800 DEPOSIT for labor At my house, apart. Today I got the gas tank and skid plates off and cleaned them out. If truly the plug caps should have inf resistance, they may still be good. I'll order the stator tomorrow (waited for cap verdict) I know the top and bottom of head. It doesn't, I repeat, IT DOESN"T HAVE O-RINGS between the domes and cylinders. I ordered the complete ring set from trinity and it came exaclty as you said, minus the dome/cylinder rings When i get it off i'll show you a pic...There is no dip or decrease in the head for an O-ring, there is just a little metal ring that fits JUST inside the cylinder, and it is this that I assume is bad. Quote
superchicken Posted July 13, 2004 Report Posted July 13, 2004 (edited) Like I said its a long story...i'll shorten it best as possible Got quad- Ran Rich Took to shop #1 - said head was bad (they may ahve been right after all) Shop #1 puts STOCK head on b&s motor... = Starts burning and leaking coolant out the studs, studs stripped Shop #2 retaps studs, stock head = stripped again At my house, apart. have the studs been heli-coiled or just retapped.the shops youve been taking it to sounds like they've butcherd your jugs.that might be your whole problem Edited July 13, 2004 by superchicken Quote
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