Gruven Intake Links
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Gruven Intake Links
After waiting for the dollar to go back up, I ordered the Gruven intake links.
10 days later arrived and installed...
Well made parts and took a few mins to install.
System works again - yay, but didnt fix the engine vibration that I've got. I suspect that I have an engine mount or misfire issue.
Couldn't really feel any difference in torque but will check again tomorrow when I can open her up a bit more than on suburban streets.
Thanks to folks on here for the referral!
Cheers
10 days later arrived and installed...
Well made parts and took a few mins to install.
System works again - yay, but didnt fix the engine vibration that I've got. I suspect that I have an engine mount or misfire issue.
Couldn't really feel any difference in torque but will check again tomorrow when I can open her up a bit more than on suburban streets.
Thanks to folks on here for the referral!
Cheers
Last edited by AusA8; Mar 11, 2012 at 01:29 AM.
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From: Bordentown, NJ
I'm not sure.
Mishar probably knows
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And another slight addition.
It's not just wide open throttle (WOT) but they also work at lower engine speeds also. They are actuating arms for the variable intake manifold. The intake length are adjusted depending on rpm to give better performance at not only the top end of the rev range, but also improved torque at lower and mid range rpm. SSP 282 gives a brief overview of this arrangement if you want more info.
And, after driving it today, it can state that there is a marked improvement in low end torque!!
It's not just wide open throttle (WOT) but they also work at lower engine speeds also. They are actuating arms for the variable intake manifold. The intake length are adjusted depending on rpm to give better performance at not only the top end of the rev range, but also improved torque at lower and mid range rpm. SSP 282 gives a brief overview of this arrangement if you want more info.
And, after driving it today, it can state that there is a marked improvement in low end torque!!
Last edited by AusA8; Feb 29, 2012 at 12:25 AM.
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With engine off, the arms are under spring tension and therefore the internal flap allows the 'short' intake length. Upon starting and engine at idle, the vacuum pulls the arms down thereby making the length 'long'. It stays like this till 4,480rpm when the solenoid trips and releases the vacuum, thereby allowing the shorter run.
In 'long' length, better torque at lower rpm, in 'short' length after 4,480rpm, better power.
For me, with broken linkage, I had one cylinder bank running in 'short' length all the time, hence under 4,480rpm I had one bank in 'long' and in 'short', effectively inhibiting low end torque. That's now fixed and whilst it's not a massive difference in performance, I reckon I can "feel" it.
Interestingly, whilst rummaging through the SSP, I also found that on WOT when revs swing past 3,000rpm, another flap opens in the air box to take additional air from the engine compartment! So darn complex!! But oh so nice!!
Last edited by AusA8; Mar 1, 2012 at 02:32 AM.
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You are right. I had to check it on my car because I would never design it like that. As it is if anything is wrong with the system (vacuum leak, leaky valve, broken actuator or lever...) you loose low end power. If it is just opposite, under springs long intake, you would loose high end power and in most cases no harm at all.