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  #1  
Old December 12th, 2011, 07:05 PM
cdb
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Clark Bowen
1969 Series 2a/OM617 Bugeye 88"
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intake tubing and

I'm looking for some straight 3 - 3.25" intake tubing as I fiddle around with my supercharged 4.0 motor.
AirRaid stuff looks grossly overpriced. Prefer plastic to keep heat down on the intake air.
Need an 18" section.
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  #2  
Old December 12th, 2011, 08:11 PM
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Try a muffler shop they should be able to make you an intake. You can get silicon hose to make the connections.
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  #3  
Old December 13th, 2011, 12:31 AM
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Clark Bowen
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Thanks.
Never even thought of that.
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  #4  
Old December 13th, 2011, 11:19 AM
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Stupid question, is this pipe section pre or post super-charger?
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  #5  
Old December 13th, 2011, 12:10 PM
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Probably pre since these engines use root style blowers which sit on the intake plenum. in which case a flexible hose is fine. It will give you "flexibility" (duh) and better for heat.

Go to jegs or summit racing and get a legnth of 3" or 4" brake duct hose. Good for 250degrees, smooth inside, wire core supports. Very durable. Will run ya about $50
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  #6  
Old December 13th, 2011, 04:15 PM
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Siliconeintakes.com
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  #7  
Old December 13th, 2011, 11:28 PM
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Clark Bowen
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Interesting ideas.
Since I already have the flex hose section from the plenum to the soon-to -gone MAF, I think I'll go with rigid aluminum the rest of the way to the Airraid or K&N filter.
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  #8  
Old December 14th, 2011, 12:13 AM
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Why are you deleting the MAF?

I haven't messed with a LR engine other than my 2.5TD, but if they are anything like a Ford (and something tells me its ALOT like a ford mod motor, down to the Eaton Supercharger) thats typically a bad idea.

What alot of people think they are doing is increasing HP, and they may, but not in the correct way. By Deleting or modifying the MAF, you typically lean out the A/F ratio by "tricking" the computer into thinking its seeing less air than it is. Especially in a F/I engine this can be dangerous, as well as problematic (idle and part throttle issues). trust me, I've been there and back.

I would suggest leaving the MAF alone. Whatever tubing you want to use ahead of the s/c doesn't realy matter. It has no boost running through it so flex tube, rigid tube ect doesn't matter. I would just use something that will keep your intake temps down the most (honestly the stock plastic or rubber hose is probably the best for this.


What are your goals with the truck? If its HP or fuel economy then there are a 100 better ways to go about that!


Quote:
Originally Posted by cdb View Post
Interesting ideas.
Since I already have the flex hose section from the plenum to the soon-to -gone MAF, I think I'll go with rigid aluminum the rest of the way to the Airraid or K&N filter.
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  #9  
Old December 14th, 2011, 05:05 PM
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Clark Bowen
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I'm wiring up a Megasquirt MS2 Extra from V8Developments to manage the fuel and it won't be using the MAF.
Eventually, I'll add ignition control using Ford EDIS coil packs. The MS is already wired for this.
My goals are
trying something I've never done before,
reliability (don't want to blow another engine with the supercharger),
horsepower
Any comments are welcome.
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  #10  
Old December 14th, 2011, 10:40 PM
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Quote:
Originally Posted by cdb View Post
I'm wiring up a Megasquirt MS2 Extra from V8Developments to manage the fuel and it won't be using the MAF.
Eventually, I'll add ignition control using Ford EDIS coil packs. The MS is already wired for this.
My goals are
trying something I've never done before,
reliability (don't want to blow another engine with the supercharger),
horsepower
Any comments are welcome.

How does it monitor the air coming into the engine? Soley off the TPS and IAT?

EFI requires the computer to know how much air is being sucked in order to keep the correct A/F ratio. Without an MAF how is this done?

There are too many variables to rely soley on the TPS and IAT sensor for air volume? (IMO).
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  #11  
Old December 15th, 2011, 10:24 AM
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Quote:
Originally Posted by bossman429 View Post
How does it monitor the air coming into the engine? Soley off the TPS and IAT
Megasquirt uses engine speed and manifold pressure as the main control variable. Many EFI systems use that method as opposed to mass flow sensors.
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  #12  
Old December 15th, 2011, 10:58 AM
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Hmmm new to me but i guess it make sense. Since i know nothing about ill just say good luck! And keep us posted!
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  #13  
Old December 15th, 2011, 11:11 AM
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IMO using a wideband o2 is the best way to tune A/F in boosted applications. Not sure on the MS, but I've tuned a lot of cars this way using FAST.
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  #14  
Old December 15th, 2011, 08:14 PM
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Clark Bowen
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Had a muffler guy make up the piece I needed. $10
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  #15  
Old December 15th, 2011, 08:53 PM
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Quote:
Originally Posted by cdb View Post
Had a muffler guy make up the piece I needed. $10

I feel like muffler shops are the wallymart of the automotive industry lol.

Did he use exhaust piping or something a bit more light weight?
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  #16  
Old December 16th, 2011, 09:50 PM
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Clark Bowen
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Forgot to ask so it was steel.
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  #17  
Old May 30th, 2012, 10:30 PM
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Anyone see any issues with an all silicon intake hose setup? My original hose is old and crusty, and I don't like the looks of the plastic "OES" elk call flex hose. Also, wouldn't an aluminum/steel tube absorb and transmit heat? Most of the intake setups I've ever messed with (light duty diesels) had smooth plastic, some with aluminum...
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