Safe amount of HP for stock engine?

StillenZ · 01-25-2010, 10:07 AM

I figured pistons and rods, I guess I just don't know enough about engines to understand it. So when I talk to people I would tell them I have a 4.5 liter V-6 instead of a 3.7 liter after getting the stroker kit installed? So after turbos, oil cooler, and stroker kit, someone could be runnin a lot of oil through this machine? right or wrong?

I'm just tryin to make sure I understand

vipor · 01-25-2010, 10:13 AM

GT Motorsports® Hi-Rev Crank :96 mm stroke
GT Motorsports®-spec Arias®/Wiseco® Stage II FI pistons
GT Motorsports® Rods
Bore: 96mm (optionally 100mm bore with Darton MID sleeves)
Final Displacement (exact): 4.5 L

The 87.0mm stroke affords a major advantage; it can be dropped into an unmodified (i.e. unsleeved) block with no need for longer sleeves (that have to be notched to preserve the oil jets), as is the case with the 90mm stroke crank.

The Hi-Rev crankshaft is currently available only in 87.0mm stroke variety, with 90mm and 81.4mm (stock) stroke varieties becoming available in the next six weeks.

---

all from their page

BlackCherryZ · 01-25-2010, 01:44 PM

is there any other engine modification required for the stroker kit?

i can understand that with aftermarket pistons and rods, it will have a greater displacement.......

sorry for being ignorant, but just curious.

and, how much do these kits cost in general on average? installation cost?

vipor · 01-25-2010, 01:49 PM

Contact GTM for pricing and other info. They had a thread on this a while back, I'll go look for it.

GTM Motorsports*::*ENGINE INTERNALS*::*GTM 4.2 L Stroker kit-For the VQ35HR & VQ37VHR
GTM Motorsports*::*ENGINE INTERNALS*::*GTM 4.5 L Stroker kit-For the VQ35HR & VQ37VHR
'Bout $6K for parts only.

The pistons in these kits appear to be for Forced Induction applications (probably 8.5:1-ish compression.)

vipor · 01-25-2010, 01:52 PM

here we go:

GT Motorsports: VQ37VHR Engine Internals Pistons, Rods, Stroker Kits

BlackCherryZ · 01-25-2010, 04:30 PM

Vipor,

thanks......

endless lust for more power

StillenZ · 01-25-2010, 06:06 PM

Wow Vipor.. you blew my little mind... So can you explain to the ignorant <---- what the difference would be in the end with the 87mm stroke vs. the 96mm stroke? I'm clueless.

vipor · 01-25-2010, 07:01 PM

stroke is how far the piston moves from top to bottom based off of the height of the piston, the length of the rods, and the shape of the crankshaft. the longer the stroke, the more displacement. it's an alternative to boring out the motor ("bore it out x-over", ie. 40-over) so that can displacement can be increased without milling the block.

if you notice in the text i quoted earlier the stock stroke of the motor is 81.4mm while the kit bumps it up to 87mm and they are working on a 90mm.

i'm not a mechanic, so this is my understanding. don't be too critical

StillenZ · 01-25-2010, 07:52 PM

IC... I definitely appreciate the explanation... This sounds like something any decent mechanic could do right?

vipor · 01-25-2010, 07:56 PM

anyone comfortable with pulling apart a new motor. i'd recommend a quality shop that knows the motor. like GTM, since they make the parts and have some awesome work with even the GTR.

StillenZ · 01-25-2010, 08:07 PM

Thanks for the advice... So probably not the guys that would charge me $45/hr out of their garage? lol

vipor · 01-25-2010, 08:08 PM

uhm, yeah... those are called "exhaust guys" lol

G37Sam · 01-25-2010, 08:54 PM

Quote:

Originally Posted by StillenZ

I figured pistons and rods, I guess I just don't know enough about engines to understand it.

HowStuffWorks & Wikipedia would be a good start. They have simple explanations and animations to help you out

StillenZ · 01-25-2010, 10:29 PM

HOW what? and Wiki who? I don't get it Sam...maybe its a Dubai thing... all that oil gettin to your head!

KEVTEX · 01-26-2010, 12:45 AM

The stock stroke on our 370's is 86mm, so it wouldn't be a significant upgrade going to the 87mm stroker crank that is currently available. You would only gain 43cc using the 87mm stroker crank. If one were to spend that much money on engine internals, might as well go big with the 96mm crank and the 100mm bore to get 4,524cc.

01-25-2010, 10:07 AM	#46 (permalink)
StillenZ Enthusiast Member Join Date: Oct 2009 Location: Indiana Posts: 283 Drives: 09 Nissan 370Z Red M Rep Power: 16	I figured pistons and rods, I guess I just don't know enough about engines to understand it. So when I talk to people I would tell them I have a 4.5 liter V-6 instead of a 3.7 liter after getting the stroker kit installed? So after turbos, oil cooler, and stroker kit, someone could be runnin a lot of oil through this machine? right or wrong? I'm just tryin to make sure I understand __________________ Stillen Dual Exhaust / Stillen Gen 3 Intake / Stillen Headers / Eibach Pro-Kit / Euro Fog Lamp / 1000W JL Audio Amp / 2 - 12' JBL P1222's / Pioneer In-dash Nav

01-25-2010, 10:13 AM	#47 (permalink)
vipor A True Z Fanatic Join Date: Aug 2009 Location: Euless, TX [ DFW ] Age: 42 Posts: 13,531 Drives: Nismo 09-0183 QAB Rep Power: 49	GT Motorsports® Hi-Rev Crank :96 mm stroke GT Motorsports®-spec Arias®/Wiseco® Stage II FI pistons GT Motorsports® Rods Bore: 96mm (optionally 100mm bore with Darton MID sleeves) Final Displacement (exact): 4.5 L The 87.0mm stroke affords a major advantage; it can be dropped into an unmodified (i.e. unsleeved) block with no need for longer sleeves (that have to be notched to preserve the oil jets), as is the case with the 90mm stroke crank. The Hi-Rev crankshaft is currently available only in 87.0mm stroke variety, with 90mm and 81.4mm (stock) stroke varieties becoming available in the next six weeks. --- all from their page __________________ 2009 NISMO # 0193 \| QAB \| Albums! \| 05.04.10 (Dynojet) 291.94hp/248.28tq Oil Cooler (DIY) \| Custom Headlights \| GTSPEC Braces \| F.I. Long Tube Headers

01-25-2010, 01:49 PM	#49 (permalink)
vipor A True Z Fanatic Join Date: Aug 2009 Location: Euless, TX [ DFW ] Age: 42 Posts: 13,531 Drives: Nismo 09-0183 QAB Rep Power: 49	Contact GTM for pricing and other info. They had a thread on this a while back, I'll go look for it. GTM Motorsports::ENGINE INTERNALS::GTM 4.2 L Stroker kit-For the VQ35HR & VQ37VHR GTM Motorsports::ENGINE INTERNALS::GTM 4.5 L Stroker kit-For the VQ35HR & VQ37VHR 'Bout $6K for parts only. The pistons in these kits appear to be for Forced Induction applications (probably 8.5:1-ish compression.) __________________ 2009 NISMO # 0193 \| QAB \| Albums! \| 05.04.10 (Dynojet) 291.94hp/248.28tq Oil Cooler (DIY) \| Custom Headlights \| GTSPEC Braces \| F.I. Long Tube Headers

01-25-2010, 01:52 PM	#50 (permalink)
vipor A True Z Fanatic Join Date: Aug 2009 Location: Euless, TX [ DFW ] Age: 42 Posts: 13,531 Drives: Nismo 09-0183 QAB Rep Power: 49	here we go: GT Motorsports: VQ37VHR Engine Internals Pistons, Rods, Stroker Kits __________________ 2009 NISMO # 0193 \| QAB \| Albums! \| 05.04.10 (Dynojet) 291.94hp/248.28tq Oil Cooler (DIY) \| Custom Headlights \| GTSPEC Braces \| F.I. Long Tube Headers

01-25-2010, 06:06 PM	#52 (permalink)
StillenZ Enthusiast Member Join Date: Oct 2009 Location: Indiana Posts: 283 Drives: 09 Nissan 370Z Red M Rep Power: 16	Wow Vipor.. you blew my little mind... So can you explain to the ignorant <---- what the difference would be in the end with the 87mm stroke vs. the 96mm stroke? I'm clueless. __________________ Stillen Dual Exhaust / Stillen Gen 3 Intake / Stillen Headers / Eibach Pro-Kit / Euro Fog Lamp / 1000W JL Audio Amp / 2 - 12' JBL P1222's / Pioneer In-dash Nav

01-25-2010, 01:44 PM	#48 (permalink)
BlackCherryZ Base Member Join Date: Jan 2010 Location: Virginia Posts: 183 Drives: 2010 BC-Z M6 Rep Power: 15	is there any other engine modification required for the stroker kit? i can understand that with aftermarket pistons and rods, it will have a greater displacement....... sorry for being ignorant, but just curious. and, how much do these kits cost in general on average? installation cost?

01-25-2010, 04:30 PM	#51 (permalink)
BlackCherryZ Base Member Join Date: Jan 2010 Location: Virginia Posts: 183 Drives: 2010 BC-Z M6 Rep Power: 15	Vipor, thanks...... endless lust for more power

01-25-2010, 07:01 PM	#53 (permalink)
vipor A True Z Fanatic Join Date: Aug 2009 Location: Euless, TX [ DFW ] Age: 42 Posts: 13,531 Drives: Nismo 09-0183 QAB Rep Power: 49	stroke is how far the piston moves from top to bottom based off of the height of the piston, the length of the rods, and the shape of the crankshaft. the longer the stroke, the more displacement. it's an alternative to boring out the motor ("bore it out x-over", ie. 40-over) so that can displacement can be increased without milling the block. if you notice in the text i quoted earlier the stock stroke of the motor is 81.4mm while the kit bumps it up to 87mm and they are working on a 90mm. i'm not a mechanic, so this is my understanding. don't be too critical __________________ 2009 NISMO # 0193 \| QAB \| Albums! \| 05.04.10 (Dynojet) 291.94hp/248.28tq Oil Cooler (DIY) \| Custom Headlights \| GTSPEC Braces \| F.I. Long Tube Headers

01-25-2010, 07:52 PM	#54 (permalink)
StillenZ Enthusiast Member Join Date: Oct 2009 Location: Indiana Posts: 283 Drives: 09 Nissan 370Z Red M Rep Power: 16	IC... I definitely appreciate the explanation... This sounds like something any decent mechanic could do right? __________________ Stillen Dual Exhaust / Stillen Gen 3 Intake / Stillen Headers / Eibach Pro-Kit / Euro Fog Lamp / 1000W JL Audio Amp / 2 - 12' JBL P1222's / Pioneer In-dash Nav

01-25-2010, 07:56 PM	#55 (permalink)
vipor A True Z Fanatic Join Date: Aug 2009 Location: Euless, TX [ DFW ] Age: 42 Posts: 13,531 Drives: Nismo 09-0183 QAB Rep Power: 49	anyone comfortable with pulling apart a new motor. i'd recommend a quality shop that knows the motor. like GTM, since they make the parts and have some awesome work with even the GTR. __________________ 2009 NISMO # 0193 \| QAB \| Albums! \| 05.04.10 (Dynojet) 291.94hp/248.28tq Oil Cooler (DIY) \| Custom Headlights \| GTSPEC Braces \| F.I. Long Tube Headers

01-25-2010, 08:07 PM	#56 (permalink)
StillenZ Enthusiast Member Join Date: Oct 2009 Location: Indiana Posts: 283 Drives: 09 Nissan 370Z Red M Rep Power: 16	Thanks for the advice... So probably not the guys that would charge me $45/hr out of their garage? lol __________________ Stillen Dual Exhaust / Stillen Gen 3 Intake / Stillen Headers / Eibach Pro-Kit / Euro Fog Lamp / 1000W JL Audio Amp / 2 - 12' JBL P1222's / Pioneer In-dash Nav

01-25-2010, 08:08 PM	#57 (permalink)
vipor A True Z Fanatic Join Date: Aug 2009 Location: Euless, TX [ DFW ] Age: 42 Posts: 13,531 Drives: Nismo 09-0183 QAB Rep Power: 49	uhm, yeah... those are called "exhaust guys" lol __________________ 2009 NISMO # 0193 \| QAB \| Albums! \| 05.04.10 (Dynojet) 291.94hp/248.28tq Oil Cooler (DIY) \| Custom Headlights \| GTSPEC Braces \| F.I. Long Tube Headers

01-25-2010, 10:29 PM	#59 (permalink)
StillenZ Enthusiast Member Join Date: Oct 2009 Location: Indiana Posts: 283 Drives: 09 Nissan 370Z Red M Rep Power: 16	HOW what? and Wiki who? I don't get it Sam...maybe its a Dubai thing... all that oil gettin to your head! __________________ Stillen Dual Exhaust / Stillen Gen 3 Intake / Stillen Headers / Eibach Pro-Kit / Euro Fog Lamp / 1000W JL Audio Amp / 2 - 12' JBL P1222's / Pioneer In-dash Nav

01-26-2010, 12:45 AM	#60 (permalink)
KEVTEX Base Member Join Date: Nov 2009 Location: Montgomery, TX Posts: 119 Drives: 2010 370Z 7at sp pg Rep Power: 16	The stock stroke on our 370's is 86mm, so it wouldn't be a significant upgrade going to the 87mm stroker crank that is currently available. You would only gain 43cc using the 87mm stroker crank. If one were to spend that much money on engine internals, might as well go big with the 96mm crank and the 100mm bore to get 4,524cc.

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