Jun Upgrade 3.5 to 3.8 Liters
03-09-2006 | 01:51 PM
#21
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Joined: Apr 2004
Posts: 416
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From: Houston, Tx
Originally Posted by theking
Quit posting bad info
DISPLACEMENT: 3.5L / 215cu. in.
BORE: 95.5mm
STROKE: 81.4mm
COMP. RATIO: 10.3:1
COMBUSTION CHAMBER: 51.5cc
Sleeves and 100mm pistons make it a 3.8L. Ask any of the people currently doing it. Our .020" overbore is ~96mm.
DISPLACEMENT: 3.5L / 215cu. in.
BORE: 95.5mm
STROKE: 81.4mm
COMP. RATIO: 10.3:1
COMBUSTION CHAMBER: 51.5cc
Sleeves and 100mm pistons make it a 3.8L. Ask any of the people currently doing it. Our .020" overbore is ~96mm.
Just wondering are the 100mm pistons the same price as the .020 overbore pistons?
Last edited by turbo-maxima; 03-09-2006 at 01:55 PM.
03-09-2006 | 03:34 PM
#22
Originally Posted by turbo-maxima
Sorry thinking of VQ30 bore. Vq30 bore is 93mm.
Just wondering are the 100mm pistons the same price as the .020 overbore pistons?
Just wondering are the 100mm pistons the same price as the .020 overbore pistons?
03-10-2006 | 12:26 AM
#23
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Joined: Jan 2005
Posts: 329
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From: WA
Originally Posted by Sharif@Forged
King is correct. Overboring to 100mm will yield 3.8L displacement....this is what I have done on my new block with Darton sleeves.
Guys, I have hinted before on this, and recently started adding some of the GTM spec product to our website. But honestly, forget about the JUN and AEBS stroker kits. GTM has 3.8L and 4.2L stroker kits that are far superior in quality, and design, at a fraction of the cost.
As a teaser (should be ready to ship in 30-45days), the GTM 3.8L or 4.2L stroker kits are $6000 COMPLETE! We are GTM Master Distributors, and will have some additional detail on these kits loaded onto the website shortly.
Guys, I have hinted before on this, and recently started adding some of the GTM spec product to our website. But honestly, forget about the JUN and AEBS stroker kits. GTM has 3.8L and 4.2L stroker kits that are far superior in quality, and design, at a fraction of the cost.
As a teaser (should be ready to ship in 30-45days), the GTM 3.8L or 4.2L stroker kits are $6000 COMPLETE! We are GTM Master Distributors, and will have some additional detail on these kits loaded onto the website shortly.
With a stoker kit, headers, exhaust and a good tune, What would be the estimated HP and Torque gain? Is this the best design preparing for FI or is it best to FI on a stock engine.
03-10-2006 | 06:19 AM
#24
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Joined: Sep 2003
Posts: 401
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From: Phoenix, AZ
Originally Posted by wilric44
I have seen the Jun upgrade located on a performance parts website. Does anyone have information on how relaible upgrading the VQ to 3.8? Will this affect installing a FI? What could be the expected HP gain at 3.8 liters? Does anyone who is selling or has the kits in stock?
03-10-2006 | 07:16 AM
#25
Sweet with a .020" overbore that's 3996cc's. Do you have to notch the block for the bigger throw?
Originally Posted by SSR Engineering
This stroker kit will be in the neighborhood of 6-10,000$ There's a stroker kit thats coming out that will be in the 2-3000$ range that bumps stroke to 92mm, lower the rod to stroke ratio to 1.55:1 (but DSMs have a similar rod to stroke ratio and still rev to 9500).
03-10-2006 | 08:18 AM
#26
Originally Posted by wilric44
Shariff
With a stoker kit, headers, exhaust and a good tune, What would be the estimated HP and Torque gain? Is this the best design preparing for FI or is it best to FI on a stock engine.
With a stoker kit, headers, exhaust and a good tune, What would be the estimated HP and Torque gain? Is this the best design preparing for FI or is it best to FI on a stock engine.
As a rule of thumb, 20% increase in displacement (3.5 to 4.2L) will result in a 20% increase in power. But you oftentimes see better improvements, based on cam selection, level of tune..etc..etc..
Last edited by Sharif@Forged; 03-10-2006 at 08:31 AM.
03-10-2006 | 08:25 AM
#27
Originally Posted by atlsupdawg#2
Other cheaper ways to bump up to 3.8L IMO.. Figure the VQ puts out about 82HP per litre so you're looking at roughly a 24HP gain from this.
03-10-2006 | 10:24 AM
#28
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Joined: Nov 2004
Posts: 2,517
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From: California
This is a waste of time, ive tried the vq40 block and its too tall and the bell housing for the tranny is different. There would be way too much modification to get it to fit.
Crank is different too, although it can work it is way too much work, instead we have modified the Crank of a VQ35 to a stroker around 100mm from 90 or 80-90mm, its basically 10mm more. Im not the engineer doing this so i don't have the actual numbers. Block is completed and should be arriving soon. I'll wait and have some others have their blocks put in as there cars are down and mine is still running strong. After that i will have a full write up with DYNOJET numbers posted.
Crank is different too, although it can work it is way too much work, instead we have modified the Crank of a VQ35 to a stroker around 100mm from 90 or 80-90mm, its basically 10mm more. Im not the engineer doing this so i don't have the actual numbers. Block is completed and should be arriving soon. I'll wait and have some others have their blocks put in as there cars are down and mine is still running strong. After that i will have a full write up with DYNOJET numbers posted.
Originally Posted by ARLETOS 350Z
I am already machining the VQ40crnk to fit to the Vq35block.I am not ready by this time.Also i will run 100mm pistons with Dartons.
I must say that it is a nightmare.
VQ40 has bigger pin journal diameter and main journal diameter also.
I must say that it is a nightmare.
VQ40 has bigger pin journal diameter and main journal diameter also.
03-11-2006 | 09:24 AM
#30
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Joined: Apr 2003
Posts: 15
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From: Orlando, FL
Titan Motorsports the home of the world's fastest and quickest import motors are working on VQ motors as we speek.
We are doing a lot of R&D right now on making our own sleeves and other items that will be perfect for the VQ.
We are also going to release a 4.1L Stroker Kit for FI and NA applications.
We will have multiple packages for people wanting to make a lot of power.
We are doing a lot of R&D right now on making our own sleeves and other items that will be perfect for the VQ.
We are also going to release a 4.1L Stroker Kit for FI and NA applications.
We will have multiple packages for people wanting to make a lot of power.
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