HKS New Stroker Kit and Evasive Motorsports Engine Build 2014 UPDATE 9/9/14 - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Carlitoz3 · 05-07-2014, 04:47 AM

This probably explains the long wait for appointment lol

mid_life_crisis · 05-07-2014, 07:56 AM

Stroker kit? So what's the increase?

steveoexige · 05-07-2014, 07:57 AM

I hope this is their long awaited 6L hemi kit.....

FAER · 05-07-2014, 08:38 AM

Quote:

Originally Posted by mid_life_crisis

Stroker kit? So what's the increase?

2.2 if you keep the stock bore

ML · 05-07-2014, 08:51 AM

This plus the power blocks,intake, full exhaust and tune on e85 at least 250hp is my guess. Based on the 100hp/liter .2 would be 20hp.

D K · 05-07-2014, 09:19 AM

Whats the crankshaft stroke?

David

spitz · 05-07-2014, 01:12 PM

Dangggg......

gabeg86 · 05-07-2014, 01:16 PM

This looks like a million dollars in parts...

FAER · 05-07-2014, 02:41 PM

Factory 86mm bore 86mm stroke

Hks stroker 90mm stroke

Bore can be machined out

Anthonytpt · 05-07-2014, 03:10 PM

Awww yisssssss.

Jason@DSG · 05-07-2014, 03:14 PM

Quote:

Originally Posted by SmsAlSuwaidi

well, hit me up when you guys take pre orders. Lets hope this comes close to previous hks stroker kits such as their 3.4l 2j kit.

The most this will ever be is 2.2L max.

Even at that, going too overbore can cause movement of the piston over time especially since these cars are being geared up to be high revvers.

My advice is to maybe go max 1mm overbore and stroker crank, should be about 2.15L, that should still be good for high rev and get the added displacement bonus.

SmsAlSuwaidi · 05-07-2014, 03:17 PM

Quote:

Originally Posted by Jason@DSG

The most this will ever be is 2.2L max.

Even at that, going too overbore can cause movement of the piston over time especially since these cars are being geared up to be high revvers.

My advice is to maybe go max 1mm overbore and stroker crank, should be about 2.15L, that should still be good for high rev and get the added displacement bonus.

Yeah i've never been a fan of cranks, until harshly tested since they can fail "quickly" imho. I referred to the 3.4 supra stroker kit since at that time it was the best, and wasnt crazy priced such as juns but now days its slightly outdated, but still does a nice job

Sent from my IBrick

Jason@DSG · 05-07-2014, 03:24 PM

Quote:

Originally Posted by SmsAlSuwaidi

Yeah i've never been a fan of cranks, until harshly tested since they can fail "quickly" imho. I referred to the 3.4 supra stroker kit since at that time it was the best, and wasnt crazy priced such as juns but now days its slightly outdated, but still does a nice job

Sent from my IBrick

Agreed! I'm not too worried with HKS to be honest but nonetheless, stroker/overbore kits need to be handled with caution. Going too big can cause balance issues and high rev problems (especially oiling).

It's good to go a bit over, but not excessive because being a boxer engine, there is only so much room in there. The stroker setup is actually pretty negligible to be honest.

Jason@DSG · 05-07-2014, 03:35 PM

Here's the formula to calculate displacement:

(PI/4) x Bore2 x Stroke x Number Of Cylinders

So if we take the HKS Crank at 90mm and let's say add in 87mm pistons in a sleeved block application, our new displacement is:

0.7854 x 7569 x 90 x 4

= 2.14L

Going to 90mm pistons and sleeve is very risky and completely unnecessary. 87mm would be the absolute ideal and max here IMO

05-07-2014, 07:56 AM	#16
mid_life_crisis Senior Member Join Date: May 2013 Drives: FR-S 10 #103 AT Location: NC Posts: 1,519 Thanks: 101 Thanked 599 Times in 347 Posts Mentioned: 5 Post(s)	Stroker kit? So what's the increase? __________________ Necessity may be the mother of Invention but Desperation is quite often the father. “Sex is like Bridge. If you don't have a good partner, you'd better have a good hand.” - Mae West Papa said, "son there's a lot of evil temptations out there. Best to try 'em all so you know which ones to avoid."

05-07-2014, 07:57 AM	#17
steveoexige Senior Member Join Date: Aug 2013 Drives: UK GT86 in White with alcantara Location: London Posts: 136 Thanks: 8 Thanked 52 Times in 30 Posts Mentioned: 2 Post(s)	I hope this is their long awaited 6L hemi kit..... Last edited by steveoexige; 05-07-2014 at 08:39 AM.

05-07-2014, 01:12 PM	#21
spitz Senior Member Join Date: Sep 2012 Drives: '13 SWP BRZ-L Location: SF Bay Area, CA Posts: 252 Thanks: 70 Thanked 106 Times in 68 Posts Mentioned: 7 Post(s)	Dangggg...... __________________

05-07-2014, 01:16 PM	#22
gabeg86 Senior Member Join Date: Jun 2012 Drives: 2013 Raven FR-S Location: Albuquerque, NM Posts: 324 Thanks: 139 Thanked 81 Times in 55 Posts Mentioned: 3 Post(s)	This looks like a million dollars in parts... __________________ Perrin (LWCP) - Blox (shift knob) - HID Powerhouse (LED's and HID's) - Eibach (sportlines) - Muteki (lugs) - SPL (LCA's) - Rays Engineering (57dr's) - Dunlop Direzza ZII (tires) - Greddy (Evo3) - Full Race (turbo kit) - Ecutek (tuned)

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05-07-2014, 04:47 AM	#15
Carlitoz3 Senior Member Join Date: Apr 2013 Drives: 2013 MT Asphalt FRS Location: Baldwin Park, CA Posts: 1,051 Thanks: 237 Thanked 235 Times in 157 Posts Mentioned: 2 Post(s)	This probably explains the long wait for appointment lol

05-07-2014, 09:19 AM	#20
D K Stig's dark passenger Join Date: Dec 2013 Drives: FR-S Location: I work abroad Posts: 724 Thanks: 60 Thanked 316 Times in 186 Posts Mentioned: 20 Post(s)	Whats the crankshaft stroke? David

05-07-2014, 02:41 PM	#23
FAER Banned Join Date: Mar 2013 Drives: Silver BRZ Location: Texas Posts: 361 Thanks: 22 Thanked 118 Times in 86 Posts Mentioned: 10 Post(s)	Factory 86mm bore 86mm stroke Hks stroker 90mm stroke Bore can be machined out

05-07-2014, 03:35 PM	#28
Jason@DSG Senior Member Join Date: Sep 2013 Drives: 1997 Eagle Talon TSi AWD Location: US/Canada Posts: 2,146 Thanks: 589 Thanked 431 Times in 266 Posts Mentioned: 42 Post(s)	Here's the formula to calculate displacement: (PI/4) x Bore2 x Stroke x Number Of Cylinders So if we take the HKS Crank at 90mm and let's say add in 87mm pistons in a sleeved block application, our new displacement is: 0.7854 x 7569 x 90 x 4 = 2.14L Going to 90mm pistons and sleeve is very risky and completely unnecessary. 87mm would be the absolute ideal and max here IMO

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