Safe amount of HP for stock engine?

LiquidZ · 01-21-2010, 06:38 AM

GTM posted a picture comparing the stock connecting rods between the HR, VHR, and DE motors a long time ago. I saved the picture because I knew it would be useful at some point.

From left to right; HR, VHR, DE:

I have posed similar questions to boosting powerhouses like GTM, AAM, and Injected Performance. After talking to them, I have concluded that about 430-450 hp on the street is perfectly fine on the stock block. The beauty of the TT though is adjustability on the fly with a boost controller. If I were to take it to a road track every now and then, I'd definitely kick that boost down a few just so I'm not pushing it. I hope this helps.

j.arnaldo · 01-21-2010, 08:30 AM

Try to contact a mechanical engineer and, if at all possible, one with lotsa savvy on Nissan engines. Guesswork could turn out very costly on an issue like this one, man.

NYBladeZ · 01-21-2010, 08:37 AM

Search button people, this question has been asked before. GTM has stated the max would be 550whp, however thus far TT owners have limited it 500whp safely.

$hytz_!ntyn$e · 01-21-2010, 09:05 AM

So how much HP is a 20g charger capable of putting out? Does anyone know if plans for a new plenum or plenum spacer are in development?

LiquidZ · 01-21-2010, 09:49 AM

Quote:

Originally Posted by $hytz_!ntyn$e

So how much HP is a 20g charger capable of putting out? Does anyone know if plans for a new plenum or plenum spacer are in development?

By using the compressor maps, thay have been calculated to be about 920 hp capable. In a real world application though, I would say 600 hp is very possible with more room to grow after that. How much room, I dont know.

IMWEZL · 01-21-2010, 05:01 PM

Quote:

Originally Posted by LiquidZ

I think he is referring to the TD06-20G turbo from Greddy

Quote:

Originally Posted by LiquidZ

By using the compressor maps, thay have been calculated to be about 920 hp capable. In a real world application though, I would say 600 hp is very possible with more room to grow after that. How much room, I dont know.

Wow the old 20G is really capable of that power output on the 370. I had a 20G from Hahn Race Craft on my SRT4 (

) and the most I was able to get was 448whp/494 lbs tq. Then again that was on a 2.4L with a single turbo.

Although I would like some more power from my Z I think I will stay with bolt-ons. Having a turbo car can be a pita at times making sure everything is running great.

vipor · 01-21-2010, 09:08 AM

plenum spacers are not necessary anymore. on the VQ35DE there was a design flaw there the plenum sloped down too much, limiting the amount of air getting to the forward two cylinders. that was fixed with the HR motor.

haven't seen a new intake manifold or any word about one yet.

NYBladeZ · 01-21-2010, 09:10 AM

the only SC thus far is GTM and I don't think it'll cost you 20g's, they haven't released their #'s yet

LiquidZ · 01-21-2010, 09:43 AM

Quote:

Originally Posted by NYBladeZ

the only SC thus far is GTM and I don't think it'll cost you 20g's, they haven't released their #'s yet

I think he is referring to the TD06-20G turbo from Greddy

NYBladeZ · 01-21-2010, 09:11 AM

I think the reason why we havne't seen a new intake manifold is that the OEM one is up to the task. This past summer at vinny ten's bbq he told me that the manifold is solid and probably won't need replacement for atleast up to 600hp

vipor · 01-21-2010, 09:46 AM

if i were do to a turbo setup though, i'd probably be budgeting somewhere up to 20g. parts, labor, accessories, etc. maybe 15-ish, but why cut corners

m4a1mustang · 01-21-2010, 10:24 AM

Quote:

Originally Posted by vipor

if i were do to a turbo setup though, i'd probably be budgeting somewhere up to 20g. parts, labor, accessories, etc. maybe 15-ish, but why cut corners

Yup. I was quoted about 18.5 for the works. Cheapest was around 10.5.

vipor · 01-21-2010, 10:54 AM

i'm interested in the GTM 4.2 stroker kit

FI can come later with a simple piston swap.. "simple" hahah

bullitt5897 · 01-21-2010, 02:16 PM

Quote:

Originally Posted by vipor

i'm interested in the GTM 4.2 stroker kit

FI can come later with a simple piston swap.. "simple" hahah

I'm going the other direction lol TT kit then stroker kit

I am going 4.5L hehehe

NewYorkJon34 · 01-24-2010, 08:18 PM

Quote:

Originally Posted by vipor

i'm interested in the GTM 4.2 stroker kit

FI can come later with a simple piston swap.. "simple" hahah

They are making a stroker kit? Any power numbers yet?

01-21-2010, 06:38 AM	#1 (permalink)
LiquidZ A True Z Fanatic Join Date: Nov 2008 Location: Columbus, OH Posts: 1,940 Drives: Mag. Black 2009 370Z Rep Power: 705	GTM posted a picture comparing the stock connecting rods between the HR, VHR, and DE motors a long time ago. I saved the picture because I knew it would be useful at some point. From left to right; HR, VHR, DE: I have posed similar questions to boosting powerhouses like GTM, AAM, and Injected Performance. After talking to them, I have concluded that about 430-450 hp on the street is perfectly fine on the stock block. The beauty of the TT though is adjustability on the fly with a boost controller. If I were to take it to a road track every now and then, I'd definitely kick that boost down a few just so I'm not pushing it. I hope this helps. __________________ Last edited by LiquidZ; 01-21-2010 at 06:51 AM.

01-21-2010, 08:37 AM	#3 (permalink)
NYBladeZ A True Z Fanatic Join Date: Apr 2009 Location: New York Posts: 2,158 Drives: Lotus Exige S Rep Power: 21	Search button people, this question has been asked before. GTM has stated the max would be 550whp, however thus far TT owners have limited it 500whp safely. __________________ 2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold 2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling

01-21-2010, 09:08 AM	#7 (permalink)
vipor A True Z Fanatic Join Date: Aug 2009 Location: Euless, TX [ DFW ] Age: 43 Posts: 13,531 Drives: Nismo 09-0183 QAB Rep Power: 49	plenum spacers are not necessary anymore. on the VQ35DE there was a design flaw there the plenum sloped down too much, limiting the amount of air getting to the forward two cylinders. that was fixed with the HR motor. haven't seen a new intake manifold or any word about one yet. __________________ 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

01-21-2010, 09:10 AM	#8 (permalink)
NYBladeZ A True Z Fanatic Join Date: Apr 2009 Location: New York Posts: 2,158 Drives: Lotus Exige S Rep Power: 21	the only SC thus far is GTM and I don't think it'll cost you 20g's, they haven't released their #'s yet __________________ 2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold 2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling

01-21-2010, 09:11 AM	#10 (permalink)
NYBladeZ A True Z Fanatic Join Date: Apr 2009 Location: New York Posts: 2,158 Drives: Lotus Exige S Rep Power: 21	I think the reason why we havne't seen a new intake manifold is that the OEM one is up to the task. This past summer at vinny ten's bbq he told me that the manifold is solid and probably won't need replacement for atleast up to 600hp __________________ 2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold 2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling

01-21-2010, 08:30 AM	#2 (permalink)
j.arnaldo Banned Join Date: Oct 2009 Location: Puerto Rico Posts: 937 Drives: Nissan 350Z, 2004 Rep Power: 0	Try to contact a mechanical engineer and, if at all possible, one with lotsa savvy on Nissan engines. Guesswork could turn out very costly on an issue like this one, man.

01-21-2010, 09:05 AM	#4 (permalink)
$hytz_!ntyn$e Base Member Join Date: Sep 2009 Location: Fayetteville, NC Posts: 7 Drives: 370z Rep Power: 16	So how much HP is a 20g charger capable of putting out? Does anyone know if plans for a new plenum or plenum spacer are in development?

01-21-2010, 09:46 AM	#11 (permalink)
vipor A True Z Fanatic Join Date: Aug 2009 Location: Euless, TX [ DFW ] Age: 43 Posts: 13,531 Drives: Nismo 09-0183 QAB Rep Power: 49	if i were do to a turbo setup though, i'd probably be budgeting somewhere up to 20g. parts, labor, accessories, etc. maybe 15-ish, but why cut corners __________________ 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

01-21-2010, 10:54 AM	#13 (permalink)
vipor A True Z Fanatic Join Date: Aug 2009 Location: Euless, TX [ DFW ] Age: 43 Posts: 13,531 Drives: Nismo 09-0183 QAB Rep Power: 49	i'm interested in the GTM 4.2 stroker kit FI can come later with a simple piston swap.. "simple" hahah __________________ 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

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