Heh, the cut looks fine (better then 90% of the butcherd **** that people make use of), I suspect that unless you've got a killer welder the welding will be a PITA.

I'll be surprised if you don't have tuning problems like that though. You've removed most of the plenum volume and youv'e got to remember that the Eaton blowers dump their output in 'lumps' as the 2 lobes mesh and unmesh. As I mentioned before, this was an issue on my brother's car with a much smaller M90 and MUCH larger volume between it and the intake valves. On the data logs we often see 10psi differences from FRAME TO FRAME, so typically you see something like on the first frame .2psi boost, second 10.4psi, then -.1psi then 11psi....

 

Eh, tuning would be a issue at all, I pretty much do it for a living.

The guy i talked to said to keep the gaps less than 1/8... i have such small gaps you probally couldn't fit a piece of cereal box cardboard threw.

I think as you start over spininng these thing the blowers start getting that pulsing action your describing. I plan on trying to underspin at all possible

 

its looking great, I can't wait to see the new fuel rails bosses, and that thing all welded up. have you measured how much room you have left above the charger and hood, I hope there is enough room for a stock hood, then you'll have a real sleeper.

 

It's good to see Rooster display initiative in an area that hasn't been be ventured before. It sad knowing that the Mustang crowd have multiple types of intake at their disposal vs. the LT1 community which to the best of my knowledge only can muster out two (Hogan's and MorePerformance). Although the LT1 intake is a simple functional design, I'm positively sure it can be improved upon significantly. Any inputs.........


P.S What ever occured from that individual talking about thermo plastic LT1 intakes.

Johnny

 

And you probably will never see a substantial selection of aftermarket intakes for LT1's. Besides the obvious (this is an engine only made for 5 years and not really used in that many cars), for the most part you'll only get marginal improvements in changing intakes in all but the most radical setups that only have marginal use since there aren't and probably will never be aftermarket blocks or ways to substantially improve the strength of the factory blocks.

Not much money in making an intake that most of the small market that could use it will look at the power/$$$ ratio and not see much of a reason to spend the money.

 

This is a sweet idea, one that I've often thought about, but never gave any real consideration. What about something for an LS-1? I know that the LPE kits are too high for a F-body, but something mounted to the side or a custom intake? Perhaps something saleens style???

 

The LPE kit is too tall for the vette's also, isn't part of the package a custom hood?

 

^^^

This is super interesting, I'd really like to see you get this working. Keep us updated. Also, how much boost are you planning on running?

 

I think now that the LT1 has been off the market for a few years you'll see many more people looking to modify their cars and many companies responding to this.

I'm still waiting on a plastic intake manifold. I would be the first buyer as my car runs pretty damn hot and the intake soaks up alot of that heat.

If I had another LT1 kicking around I'd be with Rooster cutting the intake apart making a roots blower kit.

Great research dude!! Keep us updated!!

 

check my post about injector positioning for a update.

 

This thread rocks!
All of the issues you will have for height will not be an issue for an Impala SS owner however...

Please email me with any heads up info as I have an extra intake and I'm going to find a M112 pretty quickly. Going to try and go into production on these for the Impy!
Mike

 

hehehe

 

some old pictures



http://www.coe.uncc.edu/~bktedder/M112LT1intake/

 

Very interesting. How are things coming along? Your cut intake makes my brain wonder what kind of wicked surgical techniques you could utilize on an LT intake w/ the top lopped off. E.G. What would happen if you lopped it off and made the center of the top higher, effectively increasing volume. Perhaps, what would happen if you added some material to the tops of each runner when you did that to increase runner length. Also, what would happen if you opened the floor a little in a radiated shape from each runner? These and other questions might one day be answered.......more than likely in the next few days by Mindgame or RKrause or one of the other guys w/ so much knowledge they border on insanity

 

Actually this is a pretty good idea.

In a postive manifold pressure situation such as a a blower there is no intake tuning effect from the runner length or size. Therefore a LT1 intake would be a very good canidate for this, the bad thing is the packaging in a F-body.

The small pleanum volume might hurt things. Blowers usually like more than a NA engine does.

On the another note, since you guys are mounting the blower so low on the intake I would weld the portion of the runner right above that, or machine it out and weld a block of aluminim on there so you can make a larger cross sectional area in the runner. Then you can achive better flow, postive pressure still likes flow even thought there is no tuning effects. That and doing some more work on making the runner entry better since the top is off anyways.

Rooster, I'm glad you fixed the injector angles. That old setup was not going to work since the injector would be shooting the fuel at the bottom of the runner.

O.k. so now you got to the point of putting a Eaton on it. How's it gonna fit in the engine bay? The intake ducting is going to be a bitch. Especially with the intake on the blower in the back by the cowel. Packaging looks like the next major hurdle. A Impy would love this idea though.

Bret