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Search found 118 matches

by 2seater
Wed May 05, 2021 7:23 am
Forum: Engine Tech
Topic: EFI Fuel Pressure Drop ~5psi
Replies: 20
Views: 610

Re: EFI Fuel Pressure Drop ~5psi

In many OEM installations the pressure regulation is actually downstream of the injectors Sure but within a few inches to a couple of feet of the fuel rails, not like 14 feet, right? (Real question). Adam Yes, at or near the fuel rail, but on the return to tank. The regulator should be referenced t...
by 2seater
Tue May 04, 2021 12:45 pm
Forum: Engine Tech
Topic: EFI Fuel Pressure Drop ~5psi
Replies: 20
Views: 610

Re: EFI Fuel Pressure Drop ~5psi

In many OEM installations the pressure regulation is actually downstream of the injectors
by 2seater
Sun Apr 04, 2021 6:35 pm
Forum: Engine Tech
Topic: 8V71 vs. 8V92
Replies: 25
Views: 5383

Re: 8V71 vs. 8V92

rustbucket79 wrote: Sun Apr 04, 2021 4:16 pm I’m betting that idea died on the vine. :lol:
Yep, didn't pursue it further for a flowbench, don't know about O/P. Eight vacuum motors and a single variable frequency drive works just fine, but very loud.
by 2seater
Thu Mar 18, 2021 11:40 am
Forum: Engine Tech
Topic: Recommended header coating company?
Replies: 21
Views: 1060

Re: Recommended header coating company?

I have had excellent results with Finishline in Milwaukie, OR. Most items have been used tubular exhaust manifolds, turbine housings and assorted fittings and brackets. They come back smooth inside and out. Parts have held up well and some are almost two decades old.
by 2seater
Thu Oct 29, 2020 10:24 pm
Forum: General Tech
Topic: Fastest Production Cars (2020)
Replies: 7
Views: 575

Re: Fastest Production Cars (2020)

RossDM wrote: Thu Oct 29, 2020 12:34 am Surprised Ford was only third.
In one mile
by 2seater
Wed Apr 29, 2020 3:14 pm
Forum: Engine Tech
Topic: Throttle body, conventional manifold?
Replies: 3
Views: 480

Re: Throttle body, conventional manifold?

Can't speak to the spacer and plenum volume change but I don't see where crosstalk would be much different than a conventional short ram front entrance port injected manifold like this Buick V6. Reversion maybe with a larger overlap cam would have an effect??
DSC00792.JPG
by 2seater
Tue Apr 28, 2020 2:55 pm
Forum: Engine Tech
Topic: 8V71 vs. 8V92
Replies: 25
Views: 5383

Re: 8V71 vs. 8V92

I sure don't know... I quit school in the 6th grade because the teacher didn't want me and my Dad in the same class... [/quote] Well, interesting reply but not terribly enlightening. :? Simple question is; my figures are substantially less than mentioned 44x for the 8V71 blower, so either I measured...
by 2seater
Mon Apr 27, 2020 2:07 pm
Forum: Engine Tech
Topic: 8V71 vs. 8V92
Replies: 25
Views: 5383

Re: 8V71 vs. 8V92

This is loosely related to the original post but this subject is a curiosity. I have an 8V92 blower, with the turbo bypass if that matters. My intention is to use as a flowbench air source so the capacity is what interests me. I did a tracing of the lobe void area on 1/5" graph paper some time ago. ...
by 2seater
Mon Feb 03, 2020 4:42 pm
Forum: Chassis / Suspension / Body
Topic: GM E-body front springs
Replies: 2
Views: 531

Re: GM E-body front springs

I have a couple of cast offs from parts stores too. I grab them when offered for just the above reason, but I cannot find the old suspension catalog. I may have to do it the empirical way and take one apart when the weather warms up.
by 2seater
Mon Feb 03, 2020 12:56 pm
Forum: Chassis / Suspension / Body
Topic: GM E-body front springs
Replies: 2
Views: 531

GM E-body front springs

I know this is a pretty mundane subject but the E-bodies I am referring to are the late 80's-early 90's, fwd, strut suspension with F41 option. Cars include, Olds Toronado, Buick Riviera/Reatta, Cadillac Eldorado. I have a parts manual but the factory springs are discontinued everywhere I have looke...
by 2seater
Sun Dec 22, 2019 8:01 pm
Forum: Engine Tech
Topic: Cylinder to cylinder deck clearance variation?
Replies: 8
Views: 700

Re: Cylinder to cylinder deck clearance variation?

I have noticed on three Buick V6's in succession that the center cylinder on each side have right around .003" less deck clearance, while the corners vary less than a thousandth. Switching piston and rod assemblies around has no effect, almost has to be in the crank although stroke measures correct ...
by 2seater
Wed Oct 02, 2019 5:10 pm
Forum: General Tech
Topic: EFI conversion - return line backpressure
Replies: 11
Views: 1151

Re: EFI conversion - return line backpressure

I know why. Giant pump and tiny little 5/16 steel return line snaking its way along the entire length of the car. Obviously I know that less would be better, but will a 58psi system operate as intended with that kind of backpressure? And, even if I sprung for replacing the stock lines with -10 feed...
by 2seater
Sun Aug 25, 2019 9:54 pm
Forum: Engine Tech
Topic: 90 Octane Ethanol Free or 93 Octane 10% ( hopefully )
Replies: 2
Views: 494

Re: 90 Octane Ethanol Free or 93 Octane 10% ( hopefully )

Slightly better fuel mileage if it doesn't knock due to the lower octane.
by 2seater
Thu Jul 18, 2019 10:37 pm
Forum: Engine Tech
Topic: Plenum fuel injection for reduced IATs?
Replies: 49
Views: 2739

Re: Plenum fuel injection for reduced IATs?

The Buick GN guys did a 7th injector back when there wasn't the wide selection of higher performance injectors available but mostly for additional capacity. You might try one of the GN forums.
by 2seater
Thu Nov 29, 2018 4:20 pm
Forum: Chassis / Suspension / Body
Topic: Getting my a$$ kicked by a Honda ball joint
Replies: 12
Views: 3121

Re: Getting my a$$ kicked by a Honda ball joint

I have used the hammer method many times but always with a heavyweight backup on the other side, something like two 3lb hammers, one held against the backside for support and the other hit on the front. Essentially you are momentarily squashing the taper between the two hammers, squirting the tang o...