Buick V6 Fans

[Blue-Chip]

Just a while back a couple of guys decided to twin turbo there V6 Buick in there hot rod.
These guys were plumbers by trade, but they thought they would give it a go
anyway.
The owner Dennis worked our his parts list, mapped it out on paper and they got stuck into it.
Four week ends welding, cutting, grinding and turning spanners, I thought they done a fairly decent job.
the one problem they incurred was the tuning, as according to Dennis the car went from workshop to workshop for 11 months to no avail.
This is when i first received a phone call from Dennis asking me if i could tune
it.
I had told him that if i couldn't tune it for him that all my efforts would be free.
This car was run with a one bar program, rising rate reg and fuel pressure settings of it's face on top of 36lb injectors, fouling plugs in the bottom end
and still running very lean in the top end of its rpm range.
So i had spent a couple of hours setting up the fuel system and fitted it up
with a two bar map sensor for accel enrichment, decel enleanment and a 75mm gen 3 air mass meter for steady state fuel before proceeding with tuning with a two bar plus maf program.
Results were not enormous but i must say, for the power to weight ratio and the way this thing handled due to its short wheel base it was certainly
scary to drive if you had a heavy right foot.
Here a some pics and a Dyno graph for anyone thats interested.


Cheers Lou.

 

[commy92]

so what internals if any were done to it do you know??

 

[Blue-Chip]

so what internals if any were done to it do you know??

Bog stock 210.000k vp engine out of the wreckers l think.

 

[sircruisealotVS]

damn, they did an pretty good job with that engine, thats some pretty decent power.
just wondering lou, you mentioned a gen lll maf being used...are these worth forkin out the money for? im gettin my ecotec stroked soon (like next week) using a C.O.M.E. racing short engine and i was thinkin about gettin it tuned after the build with a gen lll maf and ported throttle body (70mm).

 

[sixshooter]

And I thought I had problems... doing an oil change without messing up my rocker covers with the alternator and ABS getting in the way :/

 

[Blue-Chip]

damn, they did an pretty good job with that engine, thats some pretty decent power.
just wondering lou, you mentioned a gen lll maf being used...are these worth forkin out the money for? im gettin my ecotec stroked soon (like next week) using a C.O.M.E. racing short engine and i was thinkin about gettin it tuned after the build with a gen lll maf and ported throttle body (70mm).

sircruisealotvs, The gen3 maf was used inconjuction with the map sensor, in
order of retaing a very high resolution fuel map.
A map sensor was used for accel enrichment and deccel enleanment and is
dissabled from the main fuel equation, as it would only have 256 lookup points.
The air meter alows for over 4000 lookup point and air flow is raise to read
up to 512grams per second at sampling rates of 12.000 hz wich is pretty
quick and this is evedent in the smoothnes of the graph.
This type of setup is the best i have seen concidering you are still using the
humble 808 ecm with a mix of VT software in it.
Throttle responce is awesome, while retaining good fuel economy by using all
the VT closed loop and lean cruise logic.


Cheers Lou.

 

[Blue-Chip]

sircruisealotvs, The gen3 maf was used inconjuction with the map sensor, in
order of retaing a very high resolution fuel map.
A map sensor was used for accel enrichment and deccel enleanment and is
dissabled from the main fuel equation, as it would only have 256 lookup points.
The air meter alows for over 4000 lookup point and air flow is raise to read
up to 512grams per second at sampling rates of 12.000 hz wich is pretty
quick and this is evedent in the smoothnes of the graph.
This type of setup is the best i have seen concidering you are still using the
humble 808 ecm with a mix of VT software in it.
Throttle responce is awesome, while retaining good fuel economy by using all
the VT closed loop and lean cruise logic.


Cheers Lou.

Here is an other example of an Gen3 Air meter used in a VR 5ltr Calais with
small cam and ported heads.

Cheers Lou.

 

[sircruisealotVS]

awesome thanks lou, that sounds like it will be the next step for me after ive got this engine sorted.

 

[Blue-Chip]

awesome thanks lou, that sounds like it will be the next step for me after ive got this engine sorted.

sircuisealot, if you are contemplating a twin turbo set up, don't make the same mistake that these guys made.
The turbo's were VL which we then reco'd and further high flowed like a t3/t4
hybrid's, in my opinion this was overkill for the small amount of boost that they ran.
The thing would really come on song after 6psi and then boost cut at 9psi
For a good streeter i would recommend a couple of good S/H Subaru TD04's
that you can pick up for a couple of hundred bucks each.
I also have some laser cut s/s turbo flanges for these Turbo's
I had put a couple of these on my VT just as a F@@k around joke and mounted them at the rear of the car where the mufflers sat and to my surprise it turned 268 rwhp on 9psi boost with them coming on song @ 1800RPM. There are a few pics of this silly F/a setup which i can post if you are interested.


Cheers Lou

 

[vn88calais]

looks pretty mean for a turbo vp v6...but why down grade a hotrod to a VR or for worse off a Turbo?? i mean shouldnt a hot rod be an 8 or even Supercharged?!?!

cheers, Todd