sredish Posted September 28, 2004 Report Share Posted September 28, 2004 Aaight fellas. Some of you know that I run a much larger main than I should, for those that don't know. I have a single 35mm/Trinity manifold setup. I run a 230 main, where the typical jetting for my mods are around 180. I can't even get a richer jet than a 230, so that's how rich that is. My plugs don't look all that bad, it runs pretty good, but I SHOULD NOT be running a 230 main. Now, I ordered all new gaskets from Trinity for my manifold and reed assembly. Tonight, I took my intake assembly apart, took the reeds apart, took off the airbox, just plain disassembled the whole intake for inspection of the gaskets and reeds and everything. Honestly, I couldn't remember if my manifold was the old o-ring style or the new gasket style, and was half hoping to have the oring so I could have an easy fix with the new gaskets. Nope!! All my reeds look good, all the gaskets looked pretty good, and the rubber piece that mounts the carb to the manifold also looks good. So, I have NO IDEA where my leak is coming from. I don't even really know that I have a leak. At idle, I've checked for leaks with propane gas, carb cleaner, and any other thing I could use and can't find a DAMN thing!! I had figured that my leak would occur at higher rpms under a load where the engine is sucking a little harder, but I've never actually located the leak. I still have everything apart, cleaned and more or less readly to put back in, but I really hate to without having found something suspicious. I've been riding like this for 6 months with no ill effect, but this just ain't right. Anyone have any ideas. Also, I took a pic of the intake tract, and there's a lot of black speckles, they don't flake off on my fingers unless I really rub on them or use my nail. Don't know if it's normal or not. Later. Quote Link to comment Share on other sites More sharing options...
superchicken Posted September 28, 2004 Report Share Posted September 28, 2004 huh,thats a good one.Im not to firmiliar with the two in one set up,but if you cant find the leak in the intake track,what about one of the crank seals?is it possible for one of them to be bad and sucking in air from the sides of the case?or a case leak? the black speckles look like paint to me. Quote Link to comment Share on other sites More sharing options...
racer Posted September 28, 2004 Report Share Posted September 28, 2004 done a leakdown yet? it seems like you would know to do such a thing. try that. Quote Link to comment Share on other sites More sharing options...
sredish Posted September 28, 2004 Author Report Share Posted September 28, 2004 i've been avoiding a leakdown, but it maybe looming ahead. compression is currently 150 and holds good. if the right crank seal was out, my tranny oil would be seeping down, and if the left side was out, oil would be coming out behind the flywheel and neither is happening, plus one side generally smokes differently than the other, which isn't happening. yeah, the stuff in the tract definitely seems to be paint... just thought it was weird, didn't remember that either. Quote Link to comment Share on other sites More sharing options...
fixitrod Posted September 28, 2004 Report Share Posted September 28, 2004 mrmatt is running a 400 in stock carbs with an uported motor and it runs great. Every motor is different. If you don't find a leak.... . I wouldn't worry about it. You might have one of those freak motors. Quote Link to comment Share on other sites More sharing options...
sredish Posted September 28, 2004 Author Report Share Posted September 28, 2004 That's how i've been dealin with it for the last 6 months or so. But, I'm plannin on a port job and possibly a long rod kit this winter. Then what, only thing to do is to start drillin jets, and that sucks. Can't believe I'd have to drill jets just for a port job. Quote Link to comment Share on other sites More sharing options...
racer Posted September 28, 2004 Report Share Posted September 28, 2004 freak ha-ha he could be right though. yeah that black paint is normal. kinda like that shit that comes on your slides at first also. Quote Link to comment Share on other sites More sharing options...
fixitrod Posted September 28, 2004 Report Share Posted September 28, 2004 Yeah, it does sound strange. Maybe you don't have enough air velocity going across that carb to pull the fuel in right. Hell, I don't know. Quote Link to comment Share on other sites More sharing options...
racer Posted September 28, 2004 Report Share Posted September 28, 2004 ive always heard that the 35's were hard to jet. my friend has a 33 with that setup but his is ported a decent bit. i know he's got the motor to put the 35 to use but opted out because of another guys jetting difficulties. Quote Link to comment Share on other sites More sharing options...
The Rebel Posted September 28, 2004 Report Share Posted September 28, 2004 (edited) How is it running with the 180 - 190 range jets? If you had an air leak it wouln't idle right. Rod is on the right track, that set up doesn't produce enough pressure drop(signal) to utilize the 230 main. That is why you aren't seeing a big difference in your plug readings. Go back to the smaller jets and watch your temp gauge, if it stays safe you're aight. Oh BTW that black spec is just where they coated the cylinders from the factory.......... Edited September 28, 2004 by The Rebel Quote Link to comment Share on other sites More sharing options...
fixitrod Posted September 28, 2004 Report Share Posted September 28, 2004 Just curious.... what kind of pipes are you using? Quote Link to comment Share on other sites More sharing options...
sredish Posted September 28, 2004 Author Report Share Posted September 28, 2004 Let me give you a touch of history. About 8 months ago, I switched to Iridium plugs, and it ran awesome with 180 main, for about 2 months and the power started falling off and the plugs leaned. So, I jetted up a couple sizes and it took me all the way to 230 based off plug readings. About a month ago, I woke up and went back to the BR8's and a lot of the power came back, but I'm still at 230. I was hoping that after the plug change, they'd foul from the large main. They didn't, but power was stronger. The only changes that occured at that time before the power drop was the plugs, so I couldn't have affected anything. Now, once I started jetting, maybe I caused a leak at the intake boot or something but not sure. So, maybe I'll throw in some 180s just to see how it runs, but if 180s are good, I don't see how it would even run with 230s. It's still apart. The bowl screws are damn near stripped from coming in and out, so I'm going to find some allen heads for it first. IMO, the 35 isn't really hard to jet, I've had it for a year, and I had it jetted after 3 or 4 runs and dialed right in, but, maybe there's a velocity problem. Hopefully my porting will take care of that. So, what should I do, just put the damn shit back together and cross my fingers I guess. Quote Link to comment Share on other sites More sharing options...
fixitrod Posted September 28, 2004 Report Share Posted September 28, 2004 I'd do a leak down and compression test. Are you sure you just don't need rings or something. If you don't have an air leak maybe you'd benefit from a shorter or skinner needle. Quote Link to comment Share on other sites More sharing options...
sredish Posted September 28, 2004 Author Report Share Posted September 28, 2004 I'd do a leak down and compression test. Are you sure you just don't need rings or something. If you don't have an air leak maybe you'd benefit from a shorter or skinner needle. Maybe thats not a bad idea. I've actually thought about that before, and then the thought got lost in my cavernous brain. I have a DGK and if I remember right, DEK is the next skinnier needle. I'll do that, probably order one today. Quote Link to comment Share on other sites More sharing options...
sredish Posted September 28, 2004 Author Report Share Posted September 28, 2004 I was wrong, I have a DEK. So, taper would be for 1/2 and up but a lot for 3/4 and up so I need the next richest taper, if my brain serves me right. Going from DEK to EEK would be a richer taper. Just ordered an EEK so we'll see. Guess I'll start putting it back together. Also just noticed that I put this in the Repairs when it probably shoulda been in the Jetting. Whatcha gonna do? Quote Link to comment Share on other sites More sharing options...
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