Uas Vq30 Twin Turbo Conversion Into 300Zx

[wolverine]

http://www.skylinesaustralia.com/forums/topic/358412-z32-300zx-with-vq30-twin-turbo-conversion/

This is a link to the UAS 300zx with its new VQ engine. JP has gone through a lot of development and changes to this car over the years. Lots of aero bits, new guards, diffusers suspension angle changes.

The new VQ is much lighter than the old VG and it currently has a pretty neat high rear mounted turbo set up behind the strut towers.

Anyway click the link and see what you think.

[Jetwreck]

yeh....nice.....love that motor and all there other work.

[Daleo]

Nice find, I popped this up a week or so ago, http://www.skylinesaustralia.com/forums/topic/358634-which-turbo-for-vq25-det/page__st__20__p__5731176__fromsearch__1#entry5731176

There is some amazing development work on this car

Edited April 2, 2011 by Daleo

[joshm35]

Saw this car at superlap in sydney on the weekend. Sounds insane.

[Daleo]

I heard they had an engine failure? If so, it's a shame for them, but for a stock bottom end, they'd have to be pretty impressed.

Good excuse to rebuild it and push harder?

[joshm35]

Yeah they did late in the 2nd day of comp. It was amazing to hear. From what I saw there was a fire. Very small but ended its day. Wasnt the fastest pro car there but good to see aussie built cars in the pro class

[wolverine]

Headgasket failure but not sure what they found when/if it was stripped down.

[wolverine]

from Dave

"busted the top of a sleeve in the vq30. (epic head gasket failure) over heated) these things are pretty tough. stock rods are scary thin and use 7mm thick rod bolts. reving to 8k and over 9k on down changes with 20 pounds boost, pulled from a halfcut.. (with our bolt ons lol) bearings all like new as are pistons.

bigger and better here we come "

[joshm35]

Thats awesome to hear. Hope to see it there next year again

[wolverine]

There is video of it going FUBAR in the Superlap thread in motorsport section of SAU.

[T04GTR]

these engines are very good and uber easy to work on. the problem is the rear thermostats that regulate coolant flow thru the block. the later vq's did away with it. the problem is once the coolant gets over 100 degrees they open and bypass the water away from the heads, which is low to begin with. ..... ghay design. but very easily fixed with aftermarket head gaskets that mimic the vq35hr design. or vq35hr gaskets at a whopping 30 bucks each...lol.

[Daleo]

these engines are very good and uber easy to work on. the problem is the rear thermostats that regulate coolant flow thru the block. the later vq's did away with it. the problem is once the coolant gets over 100 degrees they open and bypass the water away from the heads, which is low to begin with. ..... ghay design. but very easily fixed with aftermarket head gaskets that mimic the vq35hr design. or vq35hr gaskets at a whopping 30 bucks each...lol.

At least you can solve the issue; gonna need new gaskets for a build anyway; don't imagine you'd be using a stocker for stage 2?

[T04GTR]

no. much bettera

[Boosted Zed]

Custom quick release offset rack ends to adjust bump steer and Akerman angle.

Custom solid mounted alloy rack bushes replacing flexing urethane items.

Adjustable hollow sway bar.

[Boosted Zed]

After busting a head gasket at Superlap on the stock motor and finding it's limit, we are now bulding a tuff motor and increasing to 3.5 litre. We are using a Darton Sleave kit (closed deck) using different head gaskets which are much better and have a sealing rings. This requires modifying the engines coolant flow and does away with the two rear thermostats,not good for racing. We are using a VQ35 crank, forged rods and pistons. Whilst at it we have slightly ported and then polished the ports and domes. We relieved the domes to match the 95.5mm pistons up from 93mm. Also adding ARP main studs. We are also upgrading the turbos to either GT2871's or 3071's.

[joshm35]

Sweet. Hope this weapon makes it to superlap again next year.

[wolverine]

Thanks for update JP.

[Daleo]

Awesome to see this build; love the fine details.