Just got them last week, they are made by Jenvey, 45mm bore, 30mm tall. They're very compact and feature an ingenious lever and spring system which is very compact too. The levers currently face up but the bodies will be turned around so they face the engine, clearing the plenum floor for a low profile. The 2 banks will have to be preciously matched and I have yet to find a way of doing so. Some modifications to the lower manifold are required.

 

Typical add on is the increased runner lenght, up by 50mm since the original plenum floor also serves as the runner end and the extra 30mm and 19mm from the velocity stacks + the new plenum floor (5mm) lengthen the system. This is in fact an improvement over stock since the stock system is extremely short. Nissan tried to compensate with a variable plenum design for the vg30det.

 

 

 

 

 

 

The engine will see 2 Porsche 996 turbo's along with custom manifolds. It already has ARP head studs and Tomei steel 1.2mm head gaskets. I will probably also have the low end done with forged JE pistons and Eagle rods. Cams may be used if required.

 

-Rutger

that looks ace!!!!

Thats fantastic! What sort of price are we looking at?

Is that a Z31 engine?

 

They look top pieces of kit they do! :bow:

Is that a Z31 engine?

yes the v6 single turbo but it sounds like he is converting to a tt setup

yes the v6 single turbo but it sounds like he is converting to a tt setup

 

Twin turbo conversion would be a big improvement, but it's still the 12valve engine. :confused:

Twin turbo conversion would be a big improvement, but it's still the 12valve engine. :confused:

thats a late revision dohc 24 v your thinking of the vg30et this is the vg30det (d for duel ohc)

thats a late revision dohc 24 v your thinking of the vg30et this is the vg30det (d for duel ohc)

 

 

My bad... :mac1:

 

So this was a 24V quad cam lump that was fitted in a Z31?

 

I thought they were all 12v twin cams?

Thats fantastic! What sort of price are we looking at?

I paid 1440 euro's for the velocity stacks, the bodies and levers/springs and the TPS as seen in the pic. Since Jenvey is British, you'll probably pay somewhat less.

 

I'm using Blitz 660cc top feed injectors, if I cut the 3 original 8mm mounting holes on each side next to the bodies a billet fuel rail can be fitted. Small extension tubes will slip over the injectors and into the fuel rail due the injectors being quite deep into the manifold.

 

The vg30det has an identical lower end to the vg30dett. It has the same model heads with the same valvetrain and cams, timing belt etc. However, the inlet ports are larger but not that nicely shaped as opposed to the vg30dett, though I think that the short bend from the port into the valve seat is less sharp allowing for the air to stay attached better and not slam away along the valve. The exhaust ports are round which is good thing since it is not neccesary to 'oval' press the exhaust pipes, allowing a cleaner path. The water temp meter is fitted into the head, the vg30dett has the same provision but it is not machined.

 

The bottom end has some small bolt/press on differences. The water pump and pulley are different, so is the crank pulley. The oil extension is not used since the oil filter is directly attached to the engine. The 2 holes normally plugged on the vg30dett next to the oil inlet from the filter have check valves.

Oh and the engine came from a Cima I believe, but it was also used in some of the later Z31's.

Oh and the engine came from a Cima I believe, but it was also used in some of the later Z31's.

 

 

What vehicle is it going into then? Z32? Z31? Or something else?

engine pornography - wheres my cheque book

 

regards,

 

alex

What vehicle is it going into then? Z32? Z31? Or something else?

I plan to put it into a Z32 slicktop 2 seater, and undo it from any not needed stuff for the track. I hope the bonnet does not require that much modifications ;)

 

_cj_ :rofl:

paul is selling a slicktop for 500 quid with no engine?

Will this kit still fit the VG30DETT then?

 

Ivan

paul is selling a slicktop for 500 quid with no engine?

Thanks for the offer but I live in the Netherlands so I prefer a LHD car :D

 

This won't fit upon a vg30dett. Maybe it would fit if you enlarge the dett ports at the heads but it will be alot of work and the flange area will be reduced increasing the chances of leaks.

 

vg30det's are easy to come by. The sell for around 200-300 pounds for a very decent engine in Japan, an importer would be able to source one. Point is though, the exhaust manifolds won't fit unless you have them custom made.

 

A friend of mine is making a set for the vg30dett, if he's done you'll see some pics of those soon as well :nana2: He's trying to keep a low profile so it might even clear the stock hood, with dual plenums as well.

yes the v6 single turbo but it sounds like he is converting to a tt setup

 

 

How can it be a turbo if he's putting trumpet throttle bodies on it ??? :confused:

How can it be a turbo if he's putting trumpet throttle bodies on it ??? :confused:

 

oh yeh good queation ???

How can it be a turbo if he's putting trumpet throttle bodies on it ??? :confused:

 

Because it will have 2 low profile plenums each feeding a bank of 3 throttle boddies which will allow the engine breath easier. Just a case of individul TB's instead of a ballanced pair feeding a plenum.

 

Certainly looks a really nice bit of kit. Thought I'd stick with the single Turbo myself if its a track car. I have heard that this engine has been used very succesfully with a super charger. Which woulds be an interesting propersition

How can it be a turbo if he's putting trumpet throttle bodies on it ??? :confused:

 

 

Don't forget, RB26 Skyline GTR engines have 6 throttle butterflies ;)

SE were working on something similar to this for Russ, don't think it ever got finished though.

AHHHHHHHHH

 

I see, just imagining the trumpets and thats it... Which, by the way would sound amazing on an NA, someone do it pleeeeeeaase!!!!!

Update on this one.

 

Felt it was time to make some serious business of the intake manifold. Here's some pics of the progress so far.

The plate was bent in all directions (shitty job) to avoid additional welds. The bends that form the sides for a smoother airflow path started life as 90 degree welding pipes, 3mm thick like the rest. These were cut in 4 pieces by hand with a figuresaw. I needed just 2 full bends to complete all 8 corners. The bends have a radius of 51mm, outer diameter 46mm. This model allowed the closest clearence along the velocity stacks.

 

The inlets on both sides will be cut under a 65 degree angle and fitted with a 70mm entrance TB flange like adapter plate, connecting to another flange on the cold pipe. This is al done in order to keep a low profile for the hood. I could have used a straight design, but that would have required an oval entrance to keep surface up. Bending a round tube leading to it in an oval shape would have looked bad and upset the airflow (the coldpipe should be largest at the plenum entrance, not way before it).

 

 

 

These are the TB's with just the full throttle arms sticking up. I may have to remove them as they stick out into the plenum floor. They're not that important either since they close the way after the 90 degree angle, so at WOT they will never be touched.

 

 

This is the Jenvey spindle extender kit. I use it on the passenger side bank, I ordered extra parts for the other side (which uses a much longer shaft) but they have been on backorder for about 3 months now :rolleyes: The system will be bolted to the plenum floor for additional strenght. The aluminum thing bolted to the TB side houses bronze like bearings but it needs to be shortened, like with all other stuff with these TB kits, everything is DIY.

 

Both banks have the operating wheel and the levers connect the banks for a perfect synchronization of throttle opening. The 3rd lever connects to the regular throttle cable.

 

 

 

This is the lower plenum after welding and skimming the surface by a shop.

 

Looks awesome dude!

 

Another interesting project!

 

Keep up the good work. :) :D

looks amazing will watch this thread with a keen eye keep us posted of the project ;)

Nice work!

To sync the bodies, presuming you can't get it to idle well enough without the maf to use a flow gauge type balancer then you can compare the vacuum readings from each runner. You obviously need to have a vacuum tapping on the runners then use a DP meter or manometer to equalise all the other bodies to the master.