VQ37VHR 400HP Package BF

John@Z1 · 01-15-2014, 01:08 PM

Quote:

Originally Posted by Megan370z

actualy it does not.
you lose a little bit down low and some mid as per their testing.

again this is a normal HR intake Manifold which has longer intake runner Vs the VHR intake ,
Longer runner vs short runner is = more Mid-power Vs top end

now their testing was with an unmodified HR Vs a modified VHR which already has an advantage in the top end 7000+rpm Vs the HR which their advantage is the mid-range

unless you are running most of your time in the 7000+rpm, a similar modified HR intake manifold will yeild better result.

dont get me wrong , im not bashing their work.

A Normal HR modified did not yield better numbers. We tested that set up when performing our manifold tests.

Megan370z · 01-15-2014, 01:29 PM

Quote:

Originally Posted by John@Z1

A Normal HR modified did not yield better numbers. We tested that set up when performing our manifold tests.

ok,

it did not yield better result , where?
if you say the top end 6800+rpm then its normal , but I would be very interested to see an actual graph with both HR / VHR modified as you do.

John@Z1 · 01-16-2014, 07:35 AM

Quote:

Originally Posted by Megan370z

ok,

it did not yield better result , where?
if you say the top end 6800+rpm then its normal , but I would be very interested to see an actual graph with both HR / VHR modified as you do.

If I get some time I'll be happy to test it. However at this moment there are a few more pressing things on the plate and this may have to be on the back burner a bit, as there is testing being performed with many of our prototype products on the company car.

Megan370z · 01-16-2014, 11:09 AM

Quote:

Originally Posted by John@Z1

A Normal HR modified did not yield better numbers. We tested that set up when performing our manifold tests.

Quote:

Originally Posted by John@Z1

If I get some time I'll be happy to test it. However at this moment there are a few more pressing things on the plate and this may have to be on the back burner a bit, as there is testing being performed with many of our prototype products on the company car.

Thanks for the answer

I will also be testing a ported VHR intake manifold Vs my ported HR I did in December 2012 on my Dyno tunning session in April if I havent sold my exhaust setup before the race season here.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[FOR SALE] VQ37vhr Parts	deep007	Parts for sale (Private Classifieds)	4	10-31-2013 05:49 PM
TSB for oil consumption on the VQ37VHR.	shumby	370Z Technical Service Bulletins (TSB) / Recalls	136	01-23-2013 01:47 AM
Specs of the 3.7L VQ37VHR	admin	Engine & Drivetrain	17	11-12-2012 04:18 PM
GTM Performance Engineering: VQ37VHR Engine Build 700HP Power Package	SAM@GTM	Forced Induction	73	10-12-2012 09:46 AM
One Properly Executed 400hp 1993 FD RX-7	Waiz	Other Vehicles	18	09-01-2011 03:53 PM