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Originally Posted by SB
(Post 4687042)
Yeh, Supertrapp had a marine SSMuffler years back. There used to be a bunch of old Fountain 10 and 12Meters with them back in the day around here.
i tried a set and the noise reduction wasn't good enough for our tight DB rules. Believe it or not, the simple Drew Sidewinder tips/mufflers (they use air pistons for slight resistance on the flaps)worked better for idle.low speeds (where it matters more) Here is the drew's: https://cimg2.ibsrv.net/gimg/www.off...f7eed9b1e4.jpg |
Here and there some will be for sale on OSO and sit around forever until the seller has to sell them cheap. I dunno' why.
They take out some bark of louder wet exhaust at start and low speeds...I doubt that effective with dry. |
Drew Shotgun tips. I don't know why I said Sidewinder. Maybe because it snowed on mtn behind me yesterday and still thinking of snowmobiles ? :)
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Originally Posted by SB
(Post 4687078)
Drew Shotgun tips. I don't know why I said Sidewinder. Maybe because it snowed on mtn behind me yesterday and still thinking of snowmobiles ? :)
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Progress report. Still ugly. Waiting on carbs from pro systems. Down sized. Waiting on one intake from trick flow. Both should be in by weds. Still gotta polish pipes https://cimg9.ibsrv.net/gimg/www.off...704cabfb7.jpeg |
with the room you have,,why not eliminate the rubber coupler and weld the pipes together.then you could dump the water at the very end of the tails.just a thought.
btw,lookin good |
Originally Posted by sutphen 30
(Post 4687552)
with the room you have,,why not eliminate the rubber coupler and weld the pipes together.then you could dump the water at the very end of the tails.just a thought.
btw,lookin good |
Reversion is present. Both banks 3rd cylinder back from the front is the worst. Drivers engine(the one that wasnt dyno’d) has weird chirp at idle. Goes away with rpm. Emitting sound from rear starter side. Sounds like starterbendix failing to engage or as Ive seen in past a lifter wheel taking a ****. Replacing starter today. Reversion debating going dry or just buying lightnings. Updates to come. |
Noise was starter. Bendix was not retracting from flywheel. |
Ok. So played with engines on the hose yesterday. Reduced idle timing from 20 to 14 and opened throttle blades slightly, mostly the secondary. Reversion seems to have vanished idling at 900 for 5 minutes. A few other things. I have exhaust leak at all risers. Having these milled. I can also still add the ggb inserts to help reversion as well. Only concerning factor now is the amount of heat I am seeing at the manifolds and risers. Water flow is good out the tail pipes. How hot is too hot? I would guess we were in the 150-170 degree range just idling. Am I flowing water too fast out the tails? |
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