??Riva red pipe, MSD, 4 Blaster 1

casanova992

4U2NV
Location
Margate, NJ
Whatz up guys? I have a couple questions reguarding the riva red pipe, msd for my blaster 1.. Itz finnally finished with the exception of dropping the engine tonight.. Anyway, I installed the pipe to the engine, is there enough clearance dropping it in the hull? The water fiitings on the pipe.. I have, I believe itz 4, where do I hook them up to? I'm running a stock head, so does that mean the small water outlet on it must be grinded off, and replaced with a 3/8 barbed brass fitting? The msd enhancer, I adjust the rev limiter with the screw? Correct? Does any one know how many turns would be ideal.. I'm only running the msd, pipe and a 13/16 cutback...Any info would be apppreciated.

Thank you

Vince
 

Ottis

lamey powered
Location
Kittanning Pa.
That pipe might go throught attached, not sure, the little outlet on the head is plugged off, the one on the back of the head goes down to the inside (towards engine) 3/8 barb, the one on the other side goes down to the stinger barb, do not use a bypass with that pipe(extra water helps it make low end and dosen't help with top end). the screw on the back of the msd is the rev adjuster all the way clockwise is 9000 rpm and every 1/3 turn counter is 1100rpm down or all the way down (counter) is 5500rpm and every 1/3 up is 1100rpm hope that helps also I set my msd at 8000, dont know if thats the best though
 
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nikad58

1974 YZ 701
8000 rpm is fine.. i just run it up all the way..

the pipe will fit in the hull.. remove the carb.. it makes it easyer to slip it in..
hook up the main (pump to engine)water line on the exhaust manifold before putting the engine in.. i have always ran a bypass .. never tried it without so i cant say one way is better or not.. i like seeing water shoot out the pisser
 

Air Gramps

Air Gramps
Location
Virginia Beach
I was running the same setup minus the MSD last year. I did port the jugs and added dual cooling w/hi compression head this year...It rips

Suggest running for single cooling...

Pump feed to exhaust manifold.
Cap/close 3/16 head fitting.
Rear 3/8 head feed to bottom of pipe water chamber.
Top of water chamber to a 3/8 tee (straight side).
Tee other straight side to overboard pisser.
Tee right angle to stinger via optional water restrictor.


FYI:
You can remove the exhaust water chamber fittings and make sure that the water ports are clean into exhaust chamber. Small (like 1/32 pin hole)

You can install complete w/out carbs like nikad said.

Leave the motor forward 3 or 4 inches to hook up water lines, then mount. The rear bolt under the manifold is a little tight but do-able.

you can add an adjustable water restrictor between the tee and the stinger.


The pipe has the same power as a Factory Pipe IMO. But the mounting and design is flawed.


What are your carb jets and settings. I ran the same jettings Magoo recommended for a B-Pipe. Don't remember the size but can find out..

normal_DSC03230.JPG
 
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douglee25

m3booooy
Location
South Jersey
derm said:
I was running the same setup minus the MSD last year. I did port the jugs and added dual cooling w/hi compression head this year...It rips

Suggest running for single cooling...

Pump feed to exhaust manifold.
Cap/close 3/16 head fitting.
Rear 3/8 head feed to bottom of pipe water chamber.
Top of water chamber to a 3/8 tee (straight side).
Tee other straight side to overboard pisser.
Tee right angle to stinger via optional water restrictor.


FYI:
You can remove the exhaust water chamber fittings and make sure that the water ports are clean into exhaust chamber. Small (like 1/32 pin hole)

You can install complete w/out carbs like nikad said.

Leave the motor forward 3 or 4 inches to hook up water lines, then mount. The rear bolt under the manifold is a little tight but do-able.

you can add an adjustable water restrictor between the tee and the stinger.


The pipe has the same power as a Factory Pipe IMO. But the mounting and design is flawed.


What are your carb jets and settings. I ran the same jettings Magoo recommended for a B-Pipe. Don't remember the size but can find out..

normal_DSC03230.JPG


Derm is on the money with his suggestions. I run the pipe with a pisser and a 3 or 4mm restrictor in the line. I also have a jetworks valve on the stinger end. I run my jetting a little bit richer than a b-pipe to avoid detonation issues with the new E10 gas out now. I also run it richer for peace of mind. I'm anywhere from a 140 - 150 main and a 120 pilot, 95 gram spring, 2.0 n+s. I think this pipe runs just as well as the b-pipe but everyone seems to forget about it. I'm sure you can remember how well this pipe runs on my sj. Those 3 rear bolts are def. a pain in the a$$ to install though. Crappy design. The one thing I thought of to make the install easier was to cut a notch out of the bottom flange so you could install the bolt first and then slide the pipe down over it. Who knows.

Doug
 

Air Gramps

Air Gramps
Location
Virginia Beach
The one thing I thought of to make the install easier was to cut a notch out of the bottom flange so you could install the bolt first and then slide the pipe down over it. Who knows.

Oh, I use 2 allen bolts at the flange and 1 regular bolt under the pipe where you can not get at.

My one bottom bolt does have a notch in the flange
 

douglee25

m3booooy
Location
South Jersey
derm said:
Oh, I use 2 allen bolts at the flange and 1 regular bolt under the pipe where you can not get at.

My one bottom bolt does have a notch in the flange

Nice. I guess that must have been done before you acquired the pipe, huh?

Doug
 
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