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Re: SR20VE vs F22C vs VQ35/7 best power TQ to engine weight
No life (a.k.a. DattoMaster)
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Fully dressed, the new Pentastar V-6 is 94 lbs. lighter than the 3.7-liter engine it replaced in Jeep Grand Cherokee. Similarly, while larger in displacement, Pentastar weighs 42 lbs. less than the 3.5-liter it replaces in the Chrysler 300 application.

The earlier 3.8 iron block alloy head v6 was listed fully dressed @ 396/400 lbs
which makes sense since the Cheyv Lv3 with alloy heads 425lbs but 90 degree v6
therefore likely Pentastar is under the older VQ at around 302-304 lbs


There is a turbo derivative by Ferrari/Maseratti now cast by Chrysler
https://www.pentastars.com/engines/ferrari.php

Posted on: 9/9 10:12
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Re: SR20VE vs F22C vs VQ35/7 best power TQ to engine weight
No life (a.k.a. DattoMaster)
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LMAO well after all this talk about how good these new twin cam
efi smart v6 engines are yet limited to only rev under 8200rpm
well there is an engine with 4.2L and pushrods that beats the
recently world record 600 hp 4.2 VQ stroker race engine!
It not only beat it using a carb but it beat it dragging more
weight on the crankshaft and revs even higher at 9200!

(actually hits 9998 rpm on the dyno if you look closerly!!!!!)

Quote:
The race team needed an engine to compete in a land speed class at Bonneville requiring a displacement less than 261 ci. Keith decided the best way to achieve this and make a lot of power was to build a 259 ci V6 using a Nascar SB2 V8. The naturally aspirated V6 made 663 horsepower at 9,200 rpm and 393 lb-ft of torque at 7,300 rpm. Listen to Jeff Huneycutt from The Horsepower Monster explain how the unique engine was built below.


https://engineswapdepot.com/?p=43906


pushrods and carby for the win!!!

Posted on: 9/10 13:51
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Re: SR20VE vs F22C vs VQ35/7 best power TQ to engine weight
No life (a.k.a. DattoMaster)
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Nissan 3.4 lt V6 itbs raceweight


Bore 96.5mm
Stroke 77.4mm
Length 505mm
Width(across heads) 580mm
Height (underside of sump-top of trumpets) 588mm
C/I crank shaft - underside of sump 102mm
Dry sump 5 stage pump - pressure + 4 scavenge
Clutch 5 sintered

LMP 675 class - 44 mm restrictor
Power 480 / 500 HP @ 9500 rpm
Torque 310 lbs ft @ 7500 rpm
Weight 125 Kg. (dry, ex clutch and exhaust)
prob add alternator, air con etc and you
are around 134kg which is better than qr25de
http://www.iesracing.co.uk/3ltrV6.htm

Has any vq drag car beat the VG yet 6 seconds is nuts!!!!!
https://www.youtube.com/watch?v=TVnFU1iFVXs

Posted on: 9/15 0:55

Edited by D on 2019/9/16 13:40:43
Edited by D on 2019/9/21 8:53:51
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Re: SR20VE vs F22C vs VQ35/7 best power TQ to engine weight
No life (a.k.a. DattoMaster)
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Wowsers looking at the new Benz reverse flow v8 engine!

https://www.youtube.com/watch?v=5cRU12EpsVI

[img width=600]https://www.youtube.com/watch?v=5cRU12EpsVI[/img]


Theoretically I wonder if its possible to do that to a vq?

by swapping the heads left for the right so inlets face down.
oil feeds on inlet side of the head can be blocked and oil drain
can be done by tapping the back of the heads for rear drainage

Open in new window


1 piece relatively flat billet exhaust manifold for single turbo
from mitsubishi evo with dual inlets.

log style plenums with short angled runners to suit inlet ports
probably billet alloy as well.

Any ideas? or better leave heads as they are and have head work
to reverse in and ex valves then swap cams over each bank etc.

Tapered angled runners from the sides would allow the engine
to be lowered quite deep in the bay but would need custom sump also.

Posted on: 9/16 14:12
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Re: SR20VE vs F22C vs VQ35/7 best power TQ to engine weight
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What's the point? What's the advantage? Is it a better mouse trap?

Posted on: 9/16 22:51
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Re: SR20VE vs F22C vs VQ35/7 best power TQ to engine weight
No life (a.k.a. DattoMaster)
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weight and packaging, no manifolds with turbos hanging out the sides
by using a larger small diameter but wider twin scroll turbo at the top
will allow an easy single exhaust. However maybe the 60 degree v6 is
not such a good idea. Its just theoretical and a reverse bonnet scoop
would keep the windscreen from fogging up!

Just went back to the 910hp engine "Holden" sports sedan used was a
combo or Mazda KL and Suzuki H27 for a twin turbo setup that on further
inspection the H27 is like a smaller version of the VQ35DE.

The suzuki unit is cleaner looking but there is no doubt the more I see
the insides of this H27 version that Nissan just borrowed it and made it
larger capacity and added vvl etc. Its uncanny the similarities and yet
Suzuki didnt get the accolades from Wards for such a fine effort.

https://www.youtube.com/watch?v=ALtWWLFzty8

The Mazda KL weighed around the same as a 4age in race weight.

https://www.tsentraal.ee/mx6/engine/SAE920677.htm

Posted on: 9/17 8:09
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Re: SR20VE vs F22C vs VQ35/7 best power TQ to engine weight
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Sold on the NA VQHR 300hp atw! from factory with some pipes

Mate put me through this vid which is a great conversion for
the HOnda civic guys that want something cheaper than the K series
which is skyrocketing and yet makes no where near the torque of a v6
However these J swapped civics cant crack 400hp atw NA with the
J35 with all kinds of modifications yet vq35 unopened except
for cams 400hp atw achieved and HR model is already fast enough.

This opens up a reason not to ignore any longer all those cheap
pulsars from the late 80s and early 90s as a budget nissan build
like we used to get with datsuns.

Nissan pulsar with maxima vq35hr would be a honda killer.

Look at this HR swap in a heavy sedan, the sound and response is magic
https://www.youtube.com/watch?v=uRqOoE8HHvc


EDIT* well looks like the VQ is the go to engine for NA applications
but the Honda J is the boosted king for stock bottom end designs as
is the Toyota MZ and GR motors.

The Honda J can handle 800hp with stock bottom end but the vq 500hp

Quote:
Originally Posted by 350VRz View Post Every turbo 350z owner I have met has had a blown motor and some people in Tampa who work and worked at some well-known 350z performance shops have told me this. They said over 600hp they eventually all blow. I will qualify my statement by saying this is just what people tell me. What I have seen, been told and read on this forum and other is where I am forming my opinion. Fixed. You're talking about the validity of your statement, based on what people tell you. You'd quantify the number of owners who have blown there motor (i.e. I will quantify the number of turbo Z owners with blown motors by saying ALL that I have talked to have had an engine failure.)

Posted on: 9/18 3:37

Edited by D on 2019/9/21 8:31:27
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Re: SR20VE vs F22C vs VQ35/7 best power TQ to engine weight
No life (a.k.a. DattoMaster)
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vq30 chain cover can be used to eliminate vvl and give a better old school look

Open in new window


Open in new window


Open in new window


However I wonder how this engine the VHR? VQ based changes the chain setup at
the top and runs somehow in a V configuration or more like the ka24de

Open in new window


https://upload.wikimedia.org/wikipedia ... _Nissan_Engine_Museum.jpg
Open in new window

Posted on: 9/21 6:54
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Re: SR20VE vs F22C vs VQ35/7 best power TQ to engine weight
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When you get rid of the VVL, how do you lock the cams in the retarded position to get the best high-RPM out of it?

Posted on: 9/21 10:12
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Re: SR20VE vs F22C vs VQ35/7 best power TQ to engine weight
No life (a.k.a. DattoMaster)
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Im not sure but looks like I can just unbolt them completely from the timing gear
as they have some kind of spring loading that affects the cam speeds.

Nismo, Kelly Racing (vk56) and Schuitemaker Motorsports and other privateers and teams
have deleted them in turbo applications.

Id like to go for a small supercharger, 45 sidedraft in the end and ignition box and
get rid of all the electronics as it will be in an older datsun body.

Posted on: 9/22 1:36
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