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  #1  
Old 08-26-2008, 12:19 PM
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difference between motordyne's 5/16'' and 1/2'' plenum spacer

can someone whos experienced or knowledgable please explain to me difference between 5/16'' and 1/2'' plenum. performance wise which is better and comparison?
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Old 08-26-2008, 12:23 PM
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It's spelled out pretty clearly on MotorDyne's website. Did you read the product descriptions on there yet?
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  #3  
Old 08-26-2008, 02:52 PM
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nope
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Old 08-26-2008, 03:34 PM
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Yep

http://www.motordyneengineering.com/dynos.htm

http://www.motordyneengineering.com/techinfo.htm



Generally, the 1/2 inch spacer will yield more power up top while the 5/16" spacer will give you more midrange power.
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Old 08-26-2008, 03:40 PM
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Unless you are a track only car get the 5/16's, it has more useable power
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  #6  
Old 08-26-2008, 03:48 PM
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If you look closely at the graph the 1/2" spacer will give you more HP through
out the RPM range! (that's why I installed) Down side....you'll lose the OEM
engine cover. (no longer fits) Now you'll have a chance to have another mod!
Gary
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Old 08-26-2008, 03:52 PM
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That's kinda why I went with the 3/8" PL spacer, the thickness is between the 5/16 and 1/2.

On another note, I noticed on MD's webpage he has knocked the prices down on the 5/16" quite a bit
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Old 08-26-2008, 05:19 PM
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Quote:
Originally Posted by gary c
If you look closely at the graph the 1/2" spacer will give you more HP through
out the RPM range! (that's why I installed) Down side....you'll lose the OEM
engine cover. (no longer fits) Now you'll have a chance to have another mod!
Gary


why not just get longer bolts or something to hake the engine cover to fit . I WANT MY ENGINE COVER
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  #9  
Old 08-26-2008, 05:31 PM
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Quote:
Originally Posted by Da_ReD_G
why not just get longer bolts or something to hake the engine cover to fit . I WANT MY ENGINE COVER
According to your signature you already have the 5/16" spacer installed, so
why are you asking questions about other size spacers/covers?
Gary
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  #10  
Old 08-26-2008, 05:36 PM
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LOL gez man can a buddy try something different. IDK man if there are more gains in a different spacer then hey why not give it a shot. if the 1/2'' is better than the 5/16'' overall then why not switch
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Old 08-26-2008, 05:50 PM
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To be honest with you, you won't feel the gains over the 5/16" spacer. Stick with what you have. If you want to try something different that will give you more power then get a nitrous setup, or get a UTEC or Osiris.....based on your mods in your sig.
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  #12  
Old 08-26-2008, 05:53 PM
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VERY true i been debating how much wet or dry or even if i should spray. iw as told that vq should stay wet
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Old 08-26-2008, 05:57 PM
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my350z.com has a few threads on nitrous, you should check that out.
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  #14  
Old 08-26-2008, 07:12 PM
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Yea if you're gonna do nitrous only get a wet kit but you'll also need a purge kit and maybe a bottle warmer. But if you do go with nitrous you NEED to get your car tuned for it!

But just FYI, i have a Turbo XS utec and the gains are NIGHT and DAY.
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  #15  
Old 08-27-2008, 02:35 AM
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Quote:
Originally Posted by Da_ReD_G
nope

We can't possibly explain it any better than MD's very own website. You should try reading it when you have the time.

I would suggest the 5/16 spacer. But it seems that you already have it
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