Project fade to black- 1987 HR31 Skyline

kev · **Posted:** Sun Jun 26, 2011 4:54 pm

Hooks, I reckon if you embiggen the exhaust, you might get more spike. What's the air intake on that baby? I've found that a good band-aid for boost spiking issues is to refit the restrictive stock airbox.

(and I really should update the Hako thread for the past few week's happenings)

31GUN · **Posted:** Sun Jun 26, 2011 7:46 pm

Stock airbox is in situ.
Standard airfilter too.

And yes, you should do an update.

seventhskyline · **Posted:** Mon Jun 27, 2011 4:37 am

Forgot to ask the other time, what is your boost controller? Not turbosmart?

31GUN · **Posted:** Mon Jun 27, 2011 11:54 am

Yep. explains the spike doesn't it.

seventhskyline · **Posted:** Tue Jun 28, 2011 5:48 am

Ah! Does indeed. I'd be keen to try a Turbotech one off ebay if I were you, reliable, very minimal spiking, yet to hear a bad word about them unlike Turbospike. I had similar issues where my turbosmart controller would spike to up to 5 psi over at peak load. Pretty piss poor things they are really.

Keep the hoses short and use good silicone vac hose too.

31GUN · **Posted:** Wed Jun 29, 2011 1:48 am

I've got a Turbotech.
I put it on when I first got the car going and it was a little all over the place.
I think they may have a little trouble controlling a big turbo.
A Mate of mine had the same problem on an RB20 eqipped R32 with a similar sized turbo.

Having said that, I was going to give it another go this weekend.

kev · **Posted:** Wed Jun 29, 2011 5:29 am

Hooks asked for an overlay of the Hako and GTS-R dyno results, and after some Microsoft Excel magic, here we are

seventhskyline · **Posted:** Wed Jun 29, 2011 6:53 am

Ahh ok. I thought you had a turbosmart one, they spike really badly.

I'd say the standard wastegate is a bit sub par really to be honest...ATPturbo have some options which may work.

31GUN · **Posted:** Thu Jun 30, 2011 3:26 am

Looks interesting.
Would that fit a TO4?. I can't remember what mine looks like.

Kev, just as yours is starting to wane mine is putting its party hat on

seventhskyline · **Posted:** Thu Jun 30, 2011 5:08 am

Well this is the GTS-R turbo with wastegate piece attached, from the rear (courtesy of Dave);

ATP gate (upside down and pic from the other side...)

Strong chance I think that its the same. I'm sure ATP could supply dimensions.

31GUN · **Posted:** Sat Jul 02, 2011 4:21 am

Shall definitely be looking into that!
Looks like the start of a nice exhaust system.

seventhskyline · **Posted:** Sun Jul 03, 2011 6:23 am

Other option would be a nice, modern GT-type turbo like Angry has for sale...

[circling vultures]
And sell me the T04E
[/circling vultures]

31GUN · **Posted:** Mon Jul 04, 2011 2:43 am

Why would you want a To4E?
Apart from the fact that they are indestructable.
Fatz has some 3" exhausts......

31GUN · **Posted:** Sat Aug 06, 2011 2:51 am

Had a bit of a score the other day in the form of this...

A good size

Nice sized tip too, not too big

Cost me a case of Grolsch beer, yes, that's right, the expensive stuff.
Got an electronic boost controller thrown in too.

Eric · **Posted:** Sat Aug 06, 2011 11:35 pm

Good old Dutch Grolsch beer

31GUN · **Posted:** Sun Aug 07, 2011 1:43 am

Really good beer.
Hard to find the swing tops though.

31GUN · **Posted:** Fri Aug 19, 2011 3:53 am

Okay, exhaust phase 2.
I got this made up today.

It goes like this

All will be revealed tomorrow.

31GUN · **Posted:** Sat Aug 20, 2011 2:47 am

Time to fit my beer bought 3" exhaust.
The car is up on stands, and as I'll be working underneath it.....

To get the old exhaust out is a fairly simple job.
Just drop one axle...

...and wiggle it out.

Here it is next to the new one

The old 2.5" pressbent has always produced good power.
I put it down to being fairly straight, with only mild bends
Whereas the 3" has 2 big 90 degree bends at the back, and the bends themselves on the way through, are more severe as it has to twist it's bulk more to clear stuff.

31GUN · **Posted:** Sat Aug 20, 2011 2:54 am

To get the new one in I had to remove some stuff.
Tailshaft..

And there is no way that this....

....will fit through here

So this....

...will have to come out also.
Which is a bit of a problem here..

Because that is where my Doctor said I have a hernia.
Probably got it from a heavy bout of laughter whilst removing an R200 diff :roll:

31GUN · **Posted:** Sat Aug 20, 2011 3:30 am

Thank god for the humble jack.

Plenty of room now

To the other end.
Here is the dump.

Now to the reason for my purchase the other day.
The original -R engine came in a front cut.
And when they say cut, they mean everything, including the exhaust.
Here is where the engine fitter has adapted the 3" dump to the cars original exhaust

And here's where my new piece fits in. Just hack off the original 2.25" bit and on she goes.

The dump isn't much better

But we're stuck with it because of the rear housing of the turbo.

If you look at the bottom of this pic, you'll see the wastegate arm is built into the turbo outlet.
So until we get a large injection of funds, this is it.

Took me a while to finesse.....

....the exhaust on.
(The one on the left caused some blood and exclamations of "oh bother" and "oh dear, I appear to have struck my thumb")

My adaptor needed to have an S bend, so it didn't work quite as well as I hoped and now I have an exhaust leak.
I'll have to take it to a professional to get it fixed.

The new exhaust is both quieter and louder than the old one.
Quieter low down and louder up high, with a much more pronounced howl which is a trademark of these engines.The last time I was listening to the engine howl I ended up with a speeding ticket.
I was much more circumspect this time, besides, it's raining and the car just wheelspins when it hits boost in 1st, 2nd and 3rd.
The turbo is whistling more now, and the engine seems to be revving out better.
Feels more powerful from the pants dyno, but I'll wait for the real dyno to give a vedict.

Project fade to black- 1987 HR31 Skyline

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