If you'll recall my opinions on the 2.9...

[heptofite]

I'd say new heads at least.

it's a fresh crate engine with the improved heads, should be fine in that regard at least.

i should be starting some time before january, gotta collect all the adapters and plan the fitting.

 

[Hahnsb2]

if i can't mount it far enough forward on the lower manifold to get clearance, i'll just bolt a scoop to the entire bottom and have it feed the stock throttle body like a turbo would, then mount the thing on the side of the engine like an accessory.

You don't want a throttle body after a positive displacement blower, unless you just meant you'll be feeding the intake manifold.

 

[Twister]

it's a fresh crate engine with the improved heads, should be fine in that regard at least.

i should be starting some time before january, gotta collect all the adapters and plan the fitting.

What company did you buy your new engine from, or was it someone local.

 

[heptofite]

You don't want a throttle body after a positive displacement blower, unless you just meant you'll be feeding the intake manifold.

I've heard that it shouldn't be a problem with a functioning bypass valve, which i have.

 

[heptofite]

What company did you buy your new engine from, or was it someone local.

local.

 

[4.0B2]

so when is this build going down?

 

[heptofite]

so when is this build going down?

should be started by january, need to get everything lined up and the new engine broke in first.

 

[DHEM]

This looks interesting.

 

[Snoranger]

I've heard that it shouldn't be a problem with a functioning bypass valve, which i have.

http://www.custom-car.us/superchargers/roots-supercharger.aspx

When implementing a Roots supercharger, you must install a bypass valve and relocate the throttle body ahead of the supercharger's inlet port. If you don't move the throttle body, the supercharger will build up pressure between the supercharger and the throttle whenever your foot is off the accelerator, such as when you're idling, decelerating, or changing gears. When the pressure between the supercharger and the closed throttle exceeds the boost pressure being supplied by the supercharger, the air will be forced back through the supercharger. However, air can only move in one direction through a Roots-type supercharger. If the air tries to flow back through the supercharger, the supercharger will cease and will destroy the drive belt. This can also cause the throttle plate to buckle and get jammed in the throttle bore as the pressure will not be released. Of course, moving the throttle body further away from the intake valves will make the engine less responsive to throttle input, but that's just the cost of running a positive-displacement supercharger.

 

[heptofite]

http://www.custom-car.us/superchargers/roots-supercharger.aspx

i'm not the first person to ever have this idea, nor the first person to install it this way.

it'll be fine.

edit: that writeup was written by a ****ing moron.

 

[Snoranger]

i'm not the first person to ever have this idea, nor the first person to install it this way.

it'll be fine.

edit: that writeup was written by a ****ing moron.

I'm not saying it wont work, because it will. Blow through set-ups have been used for years. Its just not the best way to do it.

Personally, I would look for a M90 from a Supercoupe. It has a bigger external bypass valve. You can find them cheap.

 

[jhammel85]

Sweet! Good luck with this. keep us all posted!

 

[Psychopete]

 

[rockin86ranger]

ready to see this baby

2.9l ftw