The 96-00 BBC Chevys with MPFI used a singe fuel rail??
The 96-00 BBC Chevys with MPFI used a singe fuel rail??
89 K1500 Scottsdale 5.7L 5spd 3:42 RamJet cam Dart iron TBI heads 427 PCM swap
95 C2500 Cheyenne 6.5L turbo diesel 4L80e 4:10 DB2-4911 Manual pump conversion 0411 PCM trans control 2Bar COS
05 Outback XT 2.5L turbo gas auto
Its a marine intake. 100% different from a vortec truck intake.
94 Blazer, Turbo'd 350 TBI - DD
1991 2500 Suburban Adventure truck - 4wd conversion, 4-link F/R, 582ci CNP Big Block with Terminator X EFI backed by a 6L90 and twin stick'd NP205 t-case
2012 Porsche Panamera Turbo - Date night car :)
1979 16' Action Marine/"Johnny Cash" Merc Bridgeport Champ Motor - Metalflake Maniac
Got any pictures of yours sans the upper plenum?
89 K1500 Scottsdale 5.7L 5spd 3:42 RamJet cam Dart iron TBI heads 427 PCM swap
95 C2500 Cheyenne 6.5L turbo diesel 4L80e 4:10 DB2-4911 Manual pump conversion 0411 PCM trans control 2Bar COS
05 Outback XT 2.5L turbo gas auto
I had some similar questions helping a friend put an LS engine into an S10. In his case we found a fuel rail and came up with a way to change the upper part of the regulator. As I remember there is no access to the Vette regulator in the filter combination assy.
What did Merc originally do for regulator? This seems to suggest they used an external part.
Does the damper look anything like a regulator? I've has some success taking regulators apart and putting them back together using special clamps. Hard to see but this regulator has one of these clamps holding the halves together.
I have built special fittings to install these regulators in places where they were not originally found. Here's one on a smallblock marine intake:
The steel sleeve fitting was made on a drill press. The regulator, a stock part from a Cavalier 2.2, can be rotated to any position.
94 Blazer, Turbo'd 350 TBI - DD
1991 2500 Suburban Adventure truck - 4wd conversion, 4-link F/R, 582ci CNP Big Block with Terminator X EFI backed by a 6L90 and twin stick'd NP205 t-case
2012 Porsche Panamera Turbo - Date night car :)
1979 16' Action Marine/"Johnny Cash" Merc Bridgeport Champ Motor - Metalflake Maniac
Dirty little secret from merc... The mercruiser regulator is a dirt cheap keihin regulator out of a Honda car. Furthermore, the damper is just a regulator with the return port fitting blocked. Earlier motors used the same regulator but the return port fitting was open. That little open fitting is NLA from merc marine, if it wasn't I'd have one on the way.
I've contemplated messing with the fitting, drilling a hole in it, finding an o-ring and giving it a shot. But because of the oddball fittings I'll need for the back of the rail, if it doesn't work I may end up out 70 bucks for nothing.
94 Blazer, Turbo'd 350 TBI - DD
1991 2500 Suburban Adventure truck - 4wd conversion, 4-link F/R, 582ci CNP Big Block with Terminator X EFI backed by a 6L90 and twin stick'd NP205 t-case
2012 Porsche Panamera Turbo - Date night car :)
1979 16' Action Marine/"Johnny Cash" Merc Bridgeport Champ Motor - Metalflake Maniac
Merc did it a couple ways. Both involving high dollar lines and fueling units that, even in stock applications, are notoriously problematic in both their return forms and returnless forms. Most guys that keep mpi intakes swap over to an external regulator or at a minimum run the return back to their main tank, which is something the USCG frowns on. (Which is why the fuel delivery is so odd in the first place)
94 Blazer, Turbo'd 350 TBI - DD
1991 2500 Suburban Adventure truck - 4wd conversion, 4-link F/R, 582ci CNP Big Block with Terminator X EFI backed by a 6L90 and twin stick'd NP205 t-case
2012 Porsche Panamera Turbo - Date night car :)
1979 16' Action Marine/"Johnny Cash" Merc Bridgeport Champ Motor - Metalflake Maniac
Your rail not have this type regulator?
89 K1500 Scottsdale 5.7L 5spd 3:42 RamJet cam Dart iron TBI heads 427 PCM swap
95 C2500 Cheyenne 6.5L turbo diesel 4L80e 4:10 DB2-4911 Manual pump conversion 0411 PCM trans control 2Bar COS
05 Outback XT 2.5L turbo gas auto
That particular pic is when it's being used as a pulse damper (#11 fitting blocked not open) - that's exactly what I have now, can't use the rail without it unless you start cutting, drilling and tapping. If I could find the #11 with a hole in it I may be able to make it work as a regulator.
94 Blazer, Turbo'd 350 TBI - DD
1991 2500 Suburban Adventure truck - 4wd conversion, 4-link F/R, 582ci CNP Big Block with Terminator X EFI backed by a 6L90 and twin stick'd NP205 t-case
2012 Porsche Panamera Turbo - Date night car :)
1979 16' Action Marine/"Johnny Cash" Merc Bridgeport Champ Motor - Metalflake Maniac
Yup, all the 1996-2000 L29's and L21's had a single fuel rail, right up the middle of the valley. The marine intake is similar in function, different fitment.Originally Posted by brian617
On the SBC Merc marine intakes, they run at 58psi, but have 2 fuel rails while the Merc BBC marine intakes use a single rail. peace Hog
Same fuel rail as used on the Ramjet 502(502-502hp), Ramjet ZL1(454-510hp)peace Hog
Same as the hp500 Merc racing intake. I think the next bbc truck I build is going to be a 2dr Tahoe setup with 4l80e/AWD and an AFR headed 540 sprayed Merc racing blue. :eek:Same fuel rail as used on the Ramjet 502(502-502hp), Ramjet ZL1(454-510hp)
94 Blazer, Turbo'd 350 TBI - DD
1991 2500 Suburban Adventure truck - 4wd conversion, 4-link F/R, 582ci CNP Big Block with Terminator X EFI backed by a 6L90 and twin stick'd NP205 t-case
2012 Porsche Panamera Turbo - Date night car :)
1979 16' Action Marine/"Johnny Cash" Merc Bridgeport Champ Motor - Metalflake Maniac
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