View Full Version : Intake Spacer
10-18-2010, 07:58 PM
Im looking for an intake spacer for my 2.9. Any good suggestions on where to find one or am i gonna have to build one?
10-18-2010, 08:53 PM
what do you mean by an intake spacer? like throttle body? or plenum spacer?
regardless what are you trying to gain from this?
10-18-2010, 09:05 PM
If I understand what you want, and why, correctly, you have little to gain from an intake spacer. If you are looking for something similar in function to a carb spacer it isn't nearly as effective at getting the air and fuel to mix better on a fuel injected engine because the fuel isn't being introduced any farther from the valve.
If you just want to get more air flowing in faster, go check out the tech library. There is an article there about how to fit a 5.0 throttle body to a 2.9 intake. That will likely get you much closer to your goal, assuming it's what I think it is.
10-18-2010, 10:43 PM
true, throttle body spacers and intake spacers are pointless on an injected engine... a bigger throttle body just changes the percent throttle opening to percent power ratio, with a bigger throttle it will be more sensitive near closed and you will reach max power by about 1/2 throttle...
10-18-2010, 10:45 PM
Yeah I just wanted to know what exactly he was talking about n to say not to waste the money.. I thought about the throttle body spacer when I was younger but then I came to realize how much it DOESN'T help.
10-19-2010, 08:39 AM
Spacers are only really effective on carb'd engines (which the 2.9L is not).
When any sort of intake or throttle body spacer is added on a fuel injected motor, it either results in no true gain (well, you may be conned into believing that there was a change but a dyno will typically disagree), or reduces the actual performance.
There are upgrades that can be done to a 2.9 to get more performance, I've looked into it a bit. But realistically, the best upgrade is a bigger motor for performance.
It IS possible to change the cam, bore out the cylinders a bit, add a Scorpio intake with twin throttle bodies, convert to a MAF (mass air flow) setup, and a few other tweaks on a 2.9 to get more power. I don't know what doing all of that sort of thing to a 2.9 would net for gains, but I do know it would take a lot of time and a bit of money - and dropping a 5.0L in would probably get you better performance for less time and money.
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