awesome! cant wait for the vid to hear that exhaust... nothin sounds better than a 4-1 on a 750 SOHC
Thanks!
Well mine will underwhelm you. The Marshall DeepTone is the closest thing to a street legal 4-1 you'll hear. It is certified for use in Europe where they have stricter noise requirements for aftermarket pipes.
Nevertheless, we got it started again today, off the umbilical tank. even so, it always helps to turn the gas on.
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And at least up to 4K rpm, it sounds, well, deeptone, and I'm happy with it.
No vid yet. I wanted to have the tank mounted first. Still no way to set the petcock that won't interfere with the Henry Abe valve covers which i want to use. Option is to just use a stock cap in the #1 intake position, or have the HA cap cut down.
Photobucket's running slow tonight so no pictures.
I'd started a thread about cutting down the internal wire of a tach cable. The MotionPro cable I had made is too short (the internal wire) to drive the tach. I fond a longer internal wire in spare parts, and cut it down with the cutoff wheel of a dremel. Works fine. So I knew how much we were revving this time.
Pulled the #1 and 4 plugs to get a prelim compression check, just for grins. Pumping 210PSI, very healthy. Probably would've pumped higher if I'd pulled 2 & 3 also as the starter would spin it faster.
Now I don't know for a fact how important this is. A shop i worked at decades ago did a lot of dragracing and he was really keen on "volumetric efficiency" and "kicking pressure". I'm open for any discussion.
But in the context of what i grew up with kicking pressure north or 210 is desirable for a built motor. Given stock is more like 160-180psi. Harder with a hot cam, mine is the puny WebCam 41. With 10.5-1 CR pistons.
Boy, it starts easy and takes throttle without hesitation.
More tomorrow when photobucket recovers.
Over.