Hey guys,
I have just about completed fabricating a blower manifold for an LS motor. I have completed a plate that goes between and old Hilborn hat and the blower for 8 fuel injectors. I plan on using this on a 5.3 and using the original ECM and one of the tuning programs. I do have a couple of questions hopefully some one can answer.

- Should I put the intake air temp sensor in the injector plate above the blower or in the manifold?
- Does any one have experience using the ten 6mm intake bolts to hold down the intake manifold or should I plan on drilling and tapping the heads to 5/16 or maybe 3/8?

I still need to weld the seams but here is the manifold so far.

 

no picture, id put the sensor above the blower, and i would use the 6mm bolts if u are going with orings.

 

We need pics of that for sure

 

you would put it in the old Hilborn hat.

 

Why would you put the iat sensor before the air is compressed? It won't read right.

 

It will read right, it just won't read the temp of the compressed air. Vortech did this with their f-body kits.

 

So how is he supposed to tune the knock out of the motor if the computer doesn't know the actual IAT? Might as well not even have the sensor hooked up.

 

My car was tuned like this by RMCR for over a year without KR. Should the sensor be place after the heat source? Yes.

 

OK, it will read an irrelevant number right. The temp pre-blower doesn't matter, it needs to be after the air is compressed.

 

A roots blower does not compress air, it just moves air. It gets crammed into the plenum which then raises the pressure. Very inefficient but to answer the question I would definitely put it somewhere after the blower

 

Either way, the air is being compressed and is hotter post-blower, so the sensor needs to be after the blower.

 

I agree

 

I tried to resize to a lower resolution. Hopefully it's here now. It's up to about $150 in scrap aluminum. I could not afford $1400-1600 for a manifold so I made this. I will be throwing it in the oven and calking all the cracks with the TIG welder tomorrow.

 

This is a more complete picture. It shows the belt tensioner, Hilborn hat (2 holes blocked) with a TPS setup I made. The injector plate is also there. I still need to order the fuel rail and make stand offs. This stuff will be on a 6 liter either in my 63 Chevy II or a 76 Willis jet hydro. I know this stuff is no where near as efficient as a turbo but some times a guy has to do an "old school" project.

 

I agree.

Very cool project! Place the sensor on the front of the mounting plate between the three bolts (triangled shape) on either side. Or if you want to hide it, place the sensor on the backside of the mounting plate on either side and your good to go!

 

Figured out the blower drive. here is a picture. ATI ballancer to drive with a redrilled blower pulley to match the ballancer. LS3 Vette accesory drive works well. It's stting in the 63 Chevy II. Not sure if it will end up in that or the old jet boat.

 

How are you doing the tps sensor? Keep this thread updated if possible. I have an old 6 71 blower and have thought about putting it on a ls motor.

 

I made a block with a bearing and shft that the TPS bolts to. This bolts on the blower hat where the barrel valve used to be for mechanical fuel in jection. There is a linkage from the throttle blades down to the shaft. I know you can buy similar TPS devices off the shelf.

 

You are my Hero I have been thinking about a similer project on a newer car that I have ever sence I saw the First manifold come on the market (as you said there way to expensive, but coming down) I will be very intrested in how this project comes out. Iactualy saw a 5th gen camaro with a roots blower this summer but I never got close enough to check it out

 

Did you ever get this up and running Mike?