HKS Engine Parts
06-02-2007 | 08:32 AM
#21
Originally Posted by ReV2Red
Trust me it is possible. NOT RECOMMENDED, but still possible. I have rebuilt countless Yamaha outboard engines (4 cylinder and V6) with new pistons and without borring the cylinders, only honing them, and there still running strong today. And marine engines get used and abused all day long, not to mention there harsh environment.
Originally Posted by ReV2Red
Ok, if you go to hks-power.co.jp, and on the tab on the left go to engine, and scroll down until you see the picture of the VQ35 internals and click on it you will see at the top it says 500ps. I used google translate to put it in english:
* Merit - While strengthening the weak point 500PS and 7200rpm as a supposition, considering the total cost which becomes necessary for the whole [chiyun], it has become the kit design which held down price. - The forging piston compression ratio 9.0 (G/K t=0.7mm) makes [rokonpu] specification, corresponds to supercharger [chiyun]. - As for the connecting rod using the private I section forging material. As for the balance taking of the V6 crank the private jig becomes necessary, but weight balance of the small end large end by the fact that it makes genuine similar, without processing the genuine crank you install and I section connecting rod set it is possible. - The connecting rod small end can consider strength, because tilt processing is not done, cannot use with the genuine piston. Please use with the HKS forging piston and set. - High intensity volt/bolt is adopted to connecting rod volt/bolt.
* Merit - While strengthening the weak point 500PS and 7200rpm as a supposition, considering the total cost which becomes necessary for the whole [chiyun], it has become the kit design which held down price. - The forging piston compression ratio 9.0 (G/K t=0.7mm) makes [rokonpu] specification, corresponds to supercharger [chiyun]. - As for the connecting rod using the private I section forging material. As for the balance taking of the V6 crank the private jig becomes necessary, but weight balance of the small end large end by the fact that it makes genuine similar, without processing the genuine crank you install and I section connecting rod set it is possible. - The connecting rod small end can consider strength, because tilt processing is not done, cannot use with the genuine piston. Please use with the HKS forging piston and set. - High intensity volt/bolt is adopted to connecting rod volt/bolt.
06-02-2007 | 08:46 AM
#23
Originally Posted by ReV2Red
I agree it is confusing, but that's the best i can do, unless you can read japanese.
eyap that 500 ps is next to a dyno sheet that soo small you cant really read and it seems that is jsut an example of what they got out of a turbo kit.... or maybe it was what they got out of their rotex kit with this pistons/rods
http://www.hks-power.co.jp/products/...on/piston.html
otherwise this is best info:
HKS Forged Piston & Connecting Rod Kit are now available for the Nissan VQ35DE engine. The combination of HKS Pistons, and Connecting Rods strengthens the VQ35DE engine substantially and allows the engine to increases revs to 7,200RPM. The HKS Piston & Connecting Rod Kit are engineered for forced induction applications and specifically designed for the factory crankshaft. The optional HKS VQ35DE Metal Head Gaskets are targeted for forced induction and high-horsepower naturally aspirated applications.
The HKS VQ35DE Pistons and Connecting Rods are forged from special alloys for strength and durability over their factory counterparts. The HKS Pistons lowers the compression ratio to 9.0, and the HKS Connecting Rods utilize an I-beam structure. The VQ35DE factory connecting rods have a tapered design which is a weak-point for high-horsepower applications. HKS Connecting Rods address this weakness by maintaining thickness from end to end. To prevent the need to perform balancing modifications to the factory crankshaft, HKS Pistons weigh the same as the factory pistons, and HKS Connecting Rods have the same weight distribution as the factory connecting rod.
Forged Aluminum Pistons:
* Compression Ratio: 9.0:1
* Bore: 95.7mm (OEM 95.5mm)
* Displacement: 3513cc (OEM 3498cc)
Forged Connecting Rods:
* I-Beam Shape
* Non-Tapered design
* Reinforced Connecting Rod Bolt Included
Last edited by IIQuickSilverII; 06-02-2007 at 08:48 AM.
06-02-2007 | 08:47 AM
#24
Thread Starter
Joined: Jan 2006
Posts: 1,621
Likes: 0
From: In the basement
No, that dyno is what they achieved in NA form with the higher compression pistons they also sell.
That's the info from 350z tech
That's the info from 350z tech
Last edited by ReV2Red; 06-02-2007 at 09:01 AM.
06-02-2007 | 09:00 AM
#25
Originally Posted by ReV2Red
No, that dyno is what they achieved in NA form with the higher compression pistons they also sell.
so then you saying that all that the kit is rate for? see that doesnt make sense..... its possible thats whats rated at
500ps x 6 ~~ 3000ps ~~ 2700 hp / 6 450hp per rod ~~ 350whp rated each
but still more expensive that otehr 350whp rated internals liek the gtm
sucks that PS makes it confusin
06-02-2007 | 09:06 AM
#26
Thread Starter
Joined: Jan 2006
Posts: 1,621
Likes: 0
From: In the basement
I suppose it could be possible that it is rated for 500 ps per rod. It just seems like they designed these rods to be used with their GT Supercharger, and single turbo kit. I know the supercharger has a maximum rating of 450 ps, but i think the single turbo has a maximum rating of about 500ps, so it would make sense that the internals are only good until 500 ps. That's just my logic behind it. I just wish HKS would make things a bit clearer, or that someone here spoke japanese. Maybe i'll try and learn!
06-02-2007 | 09:13 AM
#27
Thread Starter
Joined: Jan 2006
Posts: 1,621
Likes: 0
From: In the basement
3000ps = 2940bhp / 6 = 490 per piston. Assuming a 17% transmission loss, this equates to 406.7 whp per piston/rod.
That must be one hell of a rod to hold 407 whp.
That must be one hell of a rod to hold 407 whp.
06-03-2007 | 08:41 AM
#29
Originally Posted by ReV2Red
3000ps = 2940bhp / 6 = 490 per piston. Assuming a 17% transmission loss, this equates to 406.7 whp per piston/rod.
That must be one hell of a rod to hold 407 whp.
That must be one hell of a rod to hold 407 whp.
you conversion is too precise...keeping in mind that a lot of time #s are inflated a bit more for marketing purpuses...that why i used the "~~" when i calculated and came out with 350whp bottom line
06-03-2007 | 12:02 PM
#31
Thread Starter
Joined: Jan 2006
Posts: 1,621
Likes: 0
From: In the basement
Originally Posted by IIQuickSilverII
you conversion is too precise...keeping in mind that a lot of time #s are inflated a bit more for marketing purpuses...that why i used the "~~" when i calculated and came out with 350whp bottom line
And if it was HKS that quoted that number, then i would be inclined to beleive it's conservative rather than inflated.
06-04-2007 | 07:13 PM
#35
Originally Posted by ReV2Red
OK, cool. Is that what the rep said?
If so then they might be worth the money, just for the fact you don't have to balance the crank. (so HKS claims)
If so then they might be worth the money, just for the fact you don't have to balance the crank. (so HKS claims)
Also I would balance it anyway, mainly the crank, if you are boosting and want to rev the engine higher you want everything balanced as much as possible.
Thread
Thread Starter
Forum
Replies
Last Post
Lt_Ballzacki
Brakes & Suspension
39
08-06-2021 07:19 AM
ars88
Zs & Gs For Sale
18
04-04-2016 08:52 AM