NITROUS OXIDE ( nos / n2o ) advice forum

Hey Guys,

A few weeks ago I was at the millbrook test track on the CAT driver training course. A few weeks prior to that I did an oil and filter change on the car. A few days before leaving for millbrook, i had a look at my oil level and seemed rather low so i decided to put a litre in it... Now if anyone has ever checked the oil on the vq35de will know how sh!t the dipstick design is. You can never get an accurate reading!

Anyway, long story shorter, i was at the track and going round a couple of corners quite fast when i saw the oil pressure flashing a few times, i ignored it and carried on. Upon getting back to the pit, i heard the engine making a slight knocking noise... So i turned it off and checked the oil and it was below minimum! (f--king skool boy error). Managed to get a litre off one of the guys on the course with me... Cranked it over, made a spiralling sound and then fired up and was knocking slightly. The instructor chap said not to use my car for the rest of the day so ended up using his. Journey back in the zed consisted of breaking down and needing 2 AA trucks...

Got back home and did some research on the internet. Found some engine restorer stuff on the internet... Did an oil change, poured a litre of that in... Went for a gentle drive with my fingers crossed, broken down after hearing a massive thump sound!

Another tow back!

Now car is on the driveway with me ran out of options... It's either a rebuild or a used block for me... Expensive times! My engine did have a problem consuming too much 5w40.

Got so sad, even contemplated selling the car... It's given me a hell of alot of problems from the start.

There's alot of knowledge on this forum so wanted to as your opinions on what I should do? Bottom end rebuild or new block? Or a new block the a build?

LOL....

Thanks for the replies peeps....

Have brought a replacement engine for the car and am planning a supercharger setup at the same time... which means that unfortunately my WON kit will be up for sale soon!

Sab!
What car is this??

Perry

I Know hindsight is a wonderfull thing, but you really should have known better

As with Perry, i don't know the engine number, so what car is it in??.

Ian

What Ian said.
Beggars belief you ignored an oil light.

Nissan 3.5 V6 according to Google - got a bad rep for being coarse, noisy and too weak to tune beyond 400hp.

Perhaps it is time to get rid or look for a different engine?

At least he's got an oil light!!
The time I know when my MGB has oil failure is when it applies heavy engine breaking on it own

my old friend from years ago use to say to me if the oil light comes on and it upsets you just take the bulb out,what a card he was

I'll bet that it wasn't so much to do with the oil being slightly low (being low on the dipstick, but still visible is normally still pretty 'full', albeit approx 1 litre down). I reckon it was the fact that with no baffled sump and hard cornering, oil starvation at high revs meant the bearings got all hot under the collar and gave up. 2zz-ge engines are very problematic in the same way on the track (hence why lotus stopped bothering using that engine and opted for the honda k-series engine in the newer exige's).

To begin with the VQ isn't the strongest engine (common of lots of modern engines that use light/cheaper internals), so ignoring the oil light while on a track was probably not the smartest thing. But, you live and learn. Goodluck with what you decide to do from here on with the car and I hope the problems go away for you mate.

The VQ35DE is actually a very stout engine. The conrods are the weak point of the engine... but if the tune is right, there are some people in the states running 500whp with stock internals and meth. Probably the most famous skyline tuner in the country informed me that the VQ engine is actually much better then the RB (skyline) series... can run upwards of 700whp with stock heads and crank.

I was going to order a short block from the states and port the heads over from my block... but decided that unless I was running a turbo setup, there is no point with a forged block, and of course the downtime too. If I hang on to the car in the future, it could be a potential option for me. Managed to get a decent used block from a trusted dealer I know and he had a used Vortech Supercharger also.

Status right now is that I'm waiting on a load of parts to be delivered from the states in order to complete my s/c setup. Engine and charger will be delivered this coming week.

Target for the build is a solid driveable: 400rwhp!

thanks for sharing friends

Custom Made Exhaust Systems

If anyones interested with what happened to this car in the end.

The following happened, it ended up looking like this:



Its guts:



And the results of forced induction:







425rwhp / 360lb (equates to around 455bhp)

13 psi on the stock block probably not the best idea, but the car has been mapped by the best VQ tuner in the country. He's advised that I run a bigger pulley (to lower boost) which I will look into shortly.

Let me just tell you, this thing FLIES! It's now the proper street racer I've always wanted... Although the whine from the supercharger and the constant bypass valve noise does get some getting used to.

The car is currently in the garage for an unrelated issue but should be back on the street in a few days.

No WON yet, it's still in the car, but disconnected... Thinking about taking it out and selling it on. Need to go forged to run that too.

425 at the wheels is very nice mate!!
Good result I reckon