Want to run an ITB manifold. Has it been done on a LT-5?

[LT-5 Music]

I wondered if someone has some info on an ITB for an LT-5 since that's the motor and manifold style I want to run for this '55 project.

Thanks.

http://i87.photobucket.com/albums/k156/wnyjazz/JJ%2055%20part%20deux/StackedChevythurs1230040810.jpg

(The whitewalls are a stealth way to hide a corner carver suspension. ;) )

[Aurora40]

I recall seeing pictures of an LT5 race motor with individual throttle bodies. I think it was the one with the flat crank as well. Not a common or produced aftermarket piece though.

[LT-5 Music]

I recall seeing pictures of an LT5 race motor with individual throttle bodies. I think it was the one with the flat crank as well. Not a common or produced aftermarket piece though.

Thanks Bob, I'll try and find it.

[-=Jeff=-]

yes I remember it too.. I thought I saw it on eBay 6-8 months ago maybe?

[FU]

Hogan's can do what ever you need.

[LT-5 Music]

Still looking, but I haven't found any info on that race car yet.

Good suggestion Al. Maybe Hogan has done an ITB intake for an LT-5 already .

[tccrab]

Something like this?

[LT-5 Music]

Something like this?

Yes.

[LGAFF]

http://en.wikipedia.org/wiki/Lotus_Elise_GT1

These are the guys that did the crank:

http://web.thielert.com/typo3/index.php?id=521&L=1

Guy on ebay had these for sale at one point, I think his ebay ID was Einsteins brain or something

Also appears Hennessey has reinvented the V8 Elise: http://www.topgear.com/uk/car-news/hennessey-venom-gt-new-video-2010-04-14

[LT-5 Music]

Tom and Lee...thanks for the info. :thumbsup:

[LGAFF]

I think Doug Rippie may have been involved in this program, he would also be a good contact.

[Paul Workman]

I think Doug Rippie may have been involved in this program, he would also be a good contact.

A fountain of research, U B, our friend!:thumbsup:

OH! That reminds me...didja send me or post that ISBN number for the book describing the DOHC development work on the 5.4L Cobra?

P.

[LT-5 Music]

I'll contact DRM.

A major reason I'm going with the LT-5 over what motors everyone else puts in these cars is because of this forum.

[todesengel]

I'll contact DRM.

A major reason I'm going with the LT-5 over what motors everyone else puts in these cars is because of this forum.

I havent done the lt-5, but I did do itb's on a lexus 4.0 in my 92 supra. I tuned it through trumpet height and it was a bit of a pita because I was running it on a gm ecu with a translator box. I was going to take it one step further, and had started fabricating a plastic enclosure when I made my twin rotrex bracket for it. I wound up getting offered a bit of money for the itb setup, had lost interest in it, and sold it all as a pullout to a guy in Maine.

I cant find my pics, but this one is sort of like mine, but they sound very similar. I imagine this is what it would sound like on the lt5 as well. These are Aussie Chaps...

http://www.streetfire.net/video/toyota-1uzfe-engine-with-itbs-revving_7172.htm

[LT-5 Music]

I havent done the lt-5, but I did do itb's on a lexus 4.0 in my 92 supra. I tuned it through trumpet height and it was a bit of a pita because I was running it on a gm ecu with a translator box. I was going to take it one step further, and had started fabricating a plastic enclosure when I made my twin rotrex bracket for it. I wound up getting offered a bit of money for the itb setup, had lost interest in it, and sold it all as a pullout to a guy in Maine.

I cant find my pics, but this one is sort of like mine, but they sound very similar. I imagine this is what it would sound like on the lt5 as well. These are Aussie Chaps...

http://www.streetfire.net/video/toyota-1uzfe-engine-with-itbs-revving_7172.htm

Thanks for the link...really liked how it sounded. :cool:

[A26B]

Greg VanDeventer had a hand in building an ITB setup for the LT5 back in the day for a couple of execs planning to run the Silver State Classic or something like that. They gave that idea up after it was discovered there was no visibility around the stacks. :sign12: Greg still has it in his shop. Looks like a giant Hilborn setup. It bolted directly to the heads.

[flyin ryan]

It will be A LOT of work (tuning) if you want it to run decent. Longer you can make your length's the better (assuming not a race car). Modern stand alone electronics will be your friend.

[todesengel]

It will be A LOT of work (tuning) if you want it to run decent. Longer you can make your length's the better (assuming not a race car). Modern stand alone electronics will be your friend.

To be fair, when tuning any engine to it's full potential modern stand alone computers are your friend. You will never utilize an engines full potential on a 20+ year old system with a burned chip. Data logging, afr setpoints, and flexibility are a tuners best friend.

[todesengel]

Something to consider when doing the itb's, for people like music and I is that we are not stuck with the stock room limitations as zr-1 people are.

Also, that lexus is a 4.0 liter, the lt-5 would have considerably more rumble to it :P

[LT-5 Music]

Greg VanDeventer had a hand in building an ITB setup for the LT5 back in the day for a couple of execs planning to run the Silver State Classic or something like that. They gave that idea up after it was discovered there was no visibility around the stacks. :sign12: Greg still has it in his shop. Looks like a giant Hilborn setup. It bolted directly to the heads.

Thanks for the info Jerry. I'd like to see that :)

It will be A LOT of work (tuning) if you want it to run decent. Longer you can make your length's the better (assuming not a race car). Modern stand alone electronics will be your friend.

X2.

To be fair, when tuning any engine to it's full potential modern stand alone computers are your friend. You will never utilize an engines full potential on a 20+ year old system with a burned chip. Data logging, afr setpoints, and flexibility are a tuners best friend.

A number of top notch stand alone efi people and systems out there obviously. One of them (from what I've read) is Lance Nist of http://panteraefi.com/ .

Likely not many efi gurus have done stand alone systems for the LT-5 but IIRC Lance has.

[todesengel]

Thanks for the info Jerry. I'd like to see that :)



X2.



A number of top notch stand alone efi people and systems out there obviously. One of them from (what I've read) is Lance Nist of http://panteraefi.com/ .

Likely not many efi gurus have done stand alone systems for the LT-5 but IIRC Lance has.

I setting mine up with a haltech platinum 2000

[LT-5 Music]

I setting mine up with a haltech platinum 2000

I have a big learning curve where these systems are concerned. Interested in what made the Haltech the right choice for you.

[todesengel]

I have a big learning curve where these systems are concerned. Interested in what made the Haltech the right choice for you.


6 Injector
6 Ignition
6 Aux. Outputs
4 Dig. Inputs
7 Analog Inputs
built in 22psi/2.5bar MAP sensors
built in/dedicated Stepper Motor control (idle valves)
can have any unused injector or ignition output reconfigured for something else
can be calibrated to use ANY sensor, temp, MAP, Oil/Fuel pressure, O2/Wideband, EGT, etc.
dual map capability for Fuel/Ignition/Boost
on-board data logging memory that can be activated by either a switch, or automatically based on a parameter set point.


Antilag/Launch Control/2step/Flat Shift switch
-Thermofan control (duty and on/off)
methanol Spray control
Nitrous Control
Closed Loop Boost Control (even by gear using road speed input)
Target AFR Map
Boost Comp Map (TPS load with MAP correction)

Not least is the quality, and support offered with the purchase of a haltech. the only thing better, imho, is a motec, and they get way up there in price quick

[flyin ryan]

This is what I.R. set-ups need, a common plenum of some sort....Just read this.

Kaase introduces new Boss Nine with stack injection

Jon Kaase has announced his latest Boss Nine design, energized by an interesting new intake manifold with a hidden plenum below and stack injection above.
Four-time winner of the Engine Masters Challenge, Kaase has succeeded in investing this new stack injected Boss Nine engine with exceptional torque and tractability? qualities not usually associated with stack injection.
But the hidden plenum on the underside of the Boss Nine intake manifold equalizes the pressures in all induction tracts and provides the engine with a clean, consistent idle, excellent part-throttle performance, and instantaneous throttle response. The plenum also provides for brake vacuum and empowers the MAP sensor, which has a major influence in the metering of the fuel.
Compared with a carbureted Boss Nine equivalent, the new stack injection system gives a surprisingly good account of itself. On a typical 520 c.i. engine with 9.8:1 compression ratio, hydraulic tappets, and running on pump fuel, the stack injection engine outpaced its carbureted rival by an extra 30 ft-lbs torque.

[Hog]

An extra 30 lb/ft on 520 cubes makes for an extra 0.06 lb/ft per cubic inch.
I wonder what the torque gain is per DOLLAR over a carb setup.

Not saying that a multiple stack setup isnt cool, they are. But pracicality and affordability aren't strong points.

peace
Hog

[flyin ryan]

http://i228.photobucket.com/albums/ee142/flyinryan_ZR1/KaaseStackInject-overhead.jpg

[LT-5 Music]

Nice setup. Thanks Ryan...

I never get tired of looking at those valve covers either :)

http://i87.photobucket.com/albums/k156/wnyjazz/jon-kaase-boss-nine-with-fuel-injec.jpg

[threestar40]

6 Injector
6 Ignition
6 Aux. Outputs
4 Dig. Inputs
7 Analog Inputs
built in 22psi/2.5bar MAP sensors
built in/dedicated Stepper Motor control (idle valves)
can have any unused injector or ignition output reconfigured for something else
can be calibrated to use ANY sensor, temp, MAP, Oil/Fuel pressure, O2/Wideband, EGT, etc.
dual map capability for Fuel/Ignition/Boost
on-board data logging memory that can be activated by either a switch, or automatically based on a parameter set point.


Antilag/Launch Control/2step/Flat Shift switch
-Thermofan control (duty and on/off)
methanol Spray control
Nitrous Control
Closed Loop Boost Control (even by gear using road speed input)
Target AFR Map
Boost Comp Map (TPS load with MAP correction)

Not least is the quality, and support offered with the purchase of a haltech. the only thing better, imho, is a motec, and they get way up there in price quick

No offense, but this is very "unimpressive" Why not Bigstuff3 or mafefi or even accel gen7 or f.a.s.t. stuff?

[flyin ryan]

No offense, but this is very "unimpressive" Why not Bigstuff3 or mafefi or even accel gen7 or f.a.s.t. stuff?LOL...you said it. I'll just sit here minding my own biz eating :happy1:.

[todesengel]

I have a big learning curve where these systems are concerned. Interested in what made the Haltech the right choice for you.

What I typed was a quick response to his question on why it was the right choice for me.

1) It fits all my requirements
2) I currently have 3 cars running haltech, so it is what I am most familiar with.
3)I have been very impressed with their product support
4) I have limited time to research a new system. I like the 32x32 mapping resolution and interface.

People are always going to have their opinion on what is better/best.
I do not have time to write everything about the system, there are plenty of sites out there that can give you all the details, and specs.

So, the haltech p2000 platinum is unimpressive in your opinion, perhaps you can spend the time to explain to me why you think this is so, and the advantages of the other systems over the haltech.

[threestar40]

People are always going to have their opinion on what is better/best.
I do not have time to write everything about the system, there are plenty of sites out there that can give you all the details, and specs.

So, the haltech p2000 platinum is unimpressive in your opinion, perhaps you can spend the time to explain to me why you think this is so, and the advantages of the other systems over the haltech.

Are you guys doing MAF cars?

Mass Airflow systems are clearly superior to speed density sytems for starters...All or most of the features you listed about the Haltech are available on the other stuff and it seems much more user friendly and plenty powerful enough for people like us. I've done the edelbrock EFI which really kind of sucked but worked ok I'll bet their EFI2 finally caught up(looks that way), The hardware on that system was actually very nice, and Now the Accel Gen 7 which is extremely powerful with more features than I would ever have the time or energy or brain to use...I looked at Motec stuff and it basically scared the crap out of me because it is too freaking complex. Maybe your an engineer or software developer or even a Fuel injection specialist in the automotive industry? I know one thing, it's an extremely formidable task to tune an electronic fuel injection twin turbo small block chevy to work like a factory car...it will shrink your brain to the point the project is not only not fun any more, but mostly a complete waste of your life and resources!

So you want to spend thousands of hours testing to optimize and program? I can't tell how many times I had wished I had just put a freaking carburetor on it. I gave up and took it to the professionals and they couldn't do it very well either...oh, it worked ok, but nothing at all like a factory tune...WOT is cake, idle is a not that big a deal, all the stuff in between is a nightmare...hot restarts, cold mornings, blazing hot summer afternoons, transient fuel situations, iac issues, spark timing control and programming, humidity, wild temperature fluctuations in the motor, running AC, Vs No AC heat soaked situations at Normal Operating Temperature, Racing conditions at a drag strip Vs. A road course Vs. just driving on the street. State Inspection and A:F ratio's...Cats vs. no Cats and how that effects the tune and how much you want deal with that every year whatever you decide, Keepiing your eye on the ball...what the hell the motor is even going to be used for most? Daily Driving, Drag Racer, Road Racer, Long Haul Touring, Short Commutes in or out of traffic, Long commutes in or out of traffic? The list goes on forever and it seems only a team of engineers can do it WELL.
By the time you might be getting somewhere you have a hole in your piston, a bent rod, a turned bearing, or some other stupid failure/dealbreaker. I shopped Haltech and Motec...both of them way too Complex for me.

I can do it, but I can't do it well...Hope you enjoyed your :happy1:

Good luck with your aftermarket fuel injection system, I'm gonna avoid it like the plague for the rest of my life unless something changes...the money and time spent just to try or do one of them is far from trivial. Got it in the *** so hard so many times with this junk, I don't even feel it any more. I had a little fun and learned volumes, but Like I said, I'm not into it any more...it's a shame, because I feel like I know a lot, but far from enough to really build something worthwhile. On second thought, It may have been easier to do a naturally aspirated car. I'll stop now, the popcorn is done.

How 'bout this: " I've spent a lot of money on turbo systems for gas motors, aftermarket fuel injection, and modification of perfectly fine factory automobiles...the rest I just wasted " ! Maybe that should go on my headstone?

Rick :usa: