Motordyne 5/16" spacer = loss of power??
03-09-2006, 12:37 PM
#81
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Originally Posted by mc350z
03-09-2006, 02:10 PM
#82
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ok thanks
they have this one aswell but it looks like an older version.
http://www.japanparts.com/db/partsli...ddle=1&small=6
i checked nismos website and they have the one in the first link i posted shown.
they have this one aswell but it looks like an older version.
http://www.japanparts.com/db/partsli...ddle=1&small=6
i checked nismos website and they have the one in the first link i posted shown.
03-12-2006, 11:43 AM
#83
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Originally Posted by Robert_K
And you dynoed 250 & 237? Nice numbers. Refresh my memory but you don't have a baseline correct? The reason I'm asking is cause I dynoed 249 & 236, mods in sig, gaining 17hp & 10tq. I don't know if our power is coming from the spacer or one of our dyno's is reading low or high?
http://videos.streetfire.net/search/...1746B1DE7B.htm
http://videos.streetfire.net/search/...5C197E1A99.htm
03-31-2006, 04:42 AM
#85
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Finally had the time to down the battery over 24 hours .. pulled the negative cable .. and ...
Then, after 1 week of learning ... pulling harder than it did before the MD spacer install.
Great ! Very satisfied !!
Then, after 1 week of learning ... pulling harder than it did before the MD spacer install.
Great ! Very satisfied !!
01-08-2009, 08:05 PM
#90
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allright sweet. I should have asked how instead of what..but you answered that too. Not to hate but I have my z1 spacer coming in two days. I'll tell you how it performs. I read up and essentially it is the same thing. 5/16 size angeled etc... You have any experience with it?
01-09-2009, 05:13 AM
#91
I've never used it. Apparently its angled like the AAM spacer used in the Sport Z Magazine "Plenum Mod Shootout".
If you're looking for comparative information on plenum mods for the 350Z/G35, the most definitive information came from this magazine.
Sport Z Magazine (now Nissan Sport Magazine) did a series of independent and comparative dyno tests of various different plenum mods a
while back and published their test results. These tests give an indication of what the various plenum mods do and how they compare.
The MD spacers made the most power and made gains everywhere on the curve. (IE no loss of Tq or HP anywhere on the curve.)
By comparison, the angled spacer was the only plenum mod to show a loss of power at various points on the curve.
Stock - Red
Angled spacer (A) - Orange
Motordyne 5/16" - Yellow
Motordyne 1/2" - Green
Crawford (C) - Blue
Kinetix (K) - Dark Blue
The bar chart below shows the averaged gain of each plenum mod over the entire curve.
So yes, overall there are differences between the various plenum mods.
I hope this answers your question.
Tony
If you're looking for comparative information on plenum mods for the 350Z/G35, the most definitive information came from this magazine.
Sport Z Magazine (now Nissan Sport Magazine) did a series of independent and comparative dyno tests of various different plenum mods a
while back and published their test results. These tests give an indication of what the various plenum mods do and how they compare.
The MD spacers made the most power and made gains everywhere on the curve. (IE no loss of Tq or HP anywhere on the curve.)
By comparison, the angled spacer was the only plenum mod to show a loss of power at various points on the curve.
Stock - Red
Angled spacer (A) - Orange
Motordyne 5/16" - Yellow
Motordyne 1/2" - Green
Crawford (C) - Blue
Kinetix (K) - Dark Blue
The bar chart below shows the averaged gain of each plenum mod over the entire curve.
So yes, overall there are differences between the various plenum mods.
I hope this answers your question.
Tony
Last edited by Hydrazine; 01-09-2009 at 05:15 AM.
01-09-2009, 08:35 AM
#92
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Interesting. But the AAM plenum spacer and the Z1 are two different companies so it wouldn't be accurate to compare both. I'll tell you if I notice a loss of power when I install it tomorow. I don't even see how that is possible as more air is allowed into the cylinder banks.
01-11-2009, 03:03 PM
#93
sometimes when you have a smoother powerband, but more power/tq than with a more "peaky" powerband, you might think/feel that you've lost HP/tq when you've actually gained hp/tq.
this happened a lot with the honda guys (vtec.)
when vtec kicked in on their stock gsr, type r, whatever, that's the only time they made power and it was a drastic, very noticeable change, and also very audible.
after they made a number of mods, got tuned, etc..they made more power everywhere but noticed vtec "didn't kick in as hard."
this was due to the smoother powerband/transition into vtec because they made power downlow as well.
i'm guessing for you guys that installed it and guaged power by your butt dyno, you might say omg wtf i think i lost power?!?
if you're really so sure, but want proof:
go to nearest facility with dyno-
do 3 dyno runs or more-
uninstall spacer-
do another 3 dyno runs or more-
compare the graphs of when you had the spacer and when you didn't, and look at the numbers.
there's your REAL dyno.
just my .02
this happened a lot with the honda guys (vtec.)
when vtec kicked in on their stock gsr, type r, whatever, that's the only time they made power and it was a drastic, very noticeable change, and also very audible.
after they made a number of mods, got tuned, etc..they made more power everywhere but noticed vtec "didn't kick in as hard."
this was due to the smoother powerband/transition into vtec because they made power downlow as well.
i'm guessing for you guys that installed it and guaged power by your butt dyno, you might say omg wtf i think i lost power?!?
if you're really so sure, but want proof:
go to nearest facility with dyno-
do 3 dyno runs or more-
uninstall spacer-
do another 3 dyno runs or more-
compare the graphs of when you had the spacer and when you didn't, and look at the numbers.
there's your REAL dyno.
just my .02
Last edited by ipodhustle; 01-11-2009 at 03:05 PM.
01-11-2009, 05:34 PM
#94
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oh replying back to my last post. I installed and it now runs great. Took a while for the idle to smooth out which i think might be because I had the gasket off center when I first started the car up. But ya I didn't lose power anywhere..just gained it everywhere
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