I was wondering if anyone has done the Track lower plenum and the 5/16" Motordyne spacer?

I am thinking about giving it a shot but wanted to see if it is one of those "lost gain's" set-up.

 

huh? maybe I'm the one lost here, but what do you mean by taking a "track" lower plenum? unless you're talking about taking a non-rev up lower plenum and putting it on a rev up motor or something. as far as I know there is nothing special about a track model plenum.

 

The lower plenum from the Track(Rev-up) motor is different than the non-Revup motors. It is designed to better flow air to the two front cylinders.

I am taking about that swap and the 5/16' spacer.

Sport Z showed a nice lower RPM gains with the Track/RevUp lower plenum on a non RevUp motor. I was wonder what about adding the 5/16" spacer too.

 

what you are basically describing is the MREV upgrade. non-mrev lower plenum and the 5/16 or 1/2 spacer.

 

Bingo!!!! but I have the non-Mrev motor.

 

Dont do it. Your better off just getting the spacer. Mrev uses the non revup motor lower plenum and the spacer. The reason for that is because the non revup motor lower plenum actually produces more power under the curve, the rev up motor just produces higher peak hp. Thats why all the rev up engines are getting mrev, because it includes the non rev up lower plenum and the spacer. But for you, you already have the lower plenum.

 

haha...thats kinda funny if its true. here are all us 03-05 owners wanting to trade up and get 06 parts (i.e. headlights, tail lights, etc), but theres actually a part from our "older" Z's that rev-up owners want. ok maybe its not funny, but I'm freakin bored.

 

I e-mailed Tony at Motordyne and he said that set-up has never been tested. He isn't sure what kind of gains it will give...if any. He did say if I do to get some good pre & post dyno #'s. Sure I could do it but $200+ for the lower plenum and finding out it is junk would be a costly lesson to learn.

I was hoping someone else already did it so I could save the $$.

 

Yes i want to know this too. but you said "Sport Z showed a nice lower RPM gains with the Track/RevUp lower plenum on a non RevUp motor" this was without spacers?
thanks

 

without spacers

 

You just need to find someone with the rev-up engine and get them to trade lower plenums with you.

 

do you have the link to that post so i could see the Dyno results?
Thanks

 

Yes that is my plan. i do have someone.. but i want to make sure that this is GOOD thing to do

 

Unless you plan to rev past 7K, I wouldn't bother with it.
If you have an engine to rev up to 8K or higher, this would be a very different story.

IMO the REVUP collector is tuned too high in frequency for the stock rev limiter. It compromises far too much just to produce a small blip at the very end of the RPM spectrum.

Put a spacer on your 287 engine to get the same (or greater) gains at the end of the RPM spectrum and keep all your midrange power and TQ.

 

5/16" or 1/2" which do you recommand and if 1/2" could i be able to use my stock strutbars?
Thanks tony

 

5/16" is what I recommend for the Z. It keeps the stock strut bar, engine cover and looks totally stock when installed.

 

Very nice. fast reply. hey out of the blue question since we are talking about it... what do you think of the Skunk2 spacer...
just wondering your 2cents on this. because it wasnt compared.
thanks again =)

 

YBLegal....Do it and let us all know!!!

Just seeing that dyno graph where there were lower RPM gains has got me wondering....But then the gains are supposed to be higher in the RPM range...

Dammit I hate this!!!

 

HAHHAAH someone said it was going to be Costly lesson to learn~
LOL and telling me to do it
I feel you man.. the same reason why i am doing this..
I love the forum.. at the same time i Hate it.. makes me think twice about everything... I am the type of guy.. i like it, i get it... and be happy with it..
oh well... back to the drawing board

 

I just bought the lower plenum off a 05 G35 MT w/ the REVUP Motor, I also plan to buy a spacer and see what the gains are. Guess I will be the lab rat in this one wish me luck!