My R34 Gt-T Street/track Build/diary

[blah_blah]

So installed the oil cooler at Scotty Customs yesterday.

Didn't have time to do any ducting but might be ok, well see!

Will be curious to see what temps it does at Phillip Island

On street driving

Highway temps on a 25c day

Before: 98 degrees

After: 80 degrees

Test Fit along with fitting a tow harness

Fitting Greddy oil thermostat opens at ~ 80degrees

All done:

[Plattsy]

very nice.

at least you let him take the bumper off to fit stuff......

[Artic Choc]

looks great tony, cant argue with those massive improvements on temps, almost convinced to replace my oil cooler with one.

hey on a side note, what front mount are you running? i really cant be bothered searching through 15 pages to find it. cheers mate.. still loving the build as always!

[blah_blah]

very nice.

at least you let him take the bumper off to fit stuff......

Is there a joke going around that I don't know of?

Why wouldn't someone let Scotty take off the front bumper if your working on the car

looks great tony, cant argue with those massive improvements on temps, almost convinced to replace my oil cooler with one.

hey on a side note, what front mount are you running? i really cant be bothered searching through 15 pages to find it. cheers mate.. still loving the build as always!

The intercooler came with the car when i bought it many moons ago.

Pretty sure its just a stardard HDI cooler. Not sure what spec though.

I'd only consider having an oil cooler if your were tracking the car.

Be hard to get over 120c consistantly on the street lol

[Plattsy]

1 word.

greg.

[blah_blah]

So anyone running an aftermarket manifold may have this issue:

Heater core hoses running up hard against the manifold:

Quick fix by Mikey @ JDM Garage:

Now have massive amounts of clearance

Might put some heatshield in there anyway as I have a whole sheet spare to use

[blah_blah]

So first track day of the year.

Had a few issues with old spark plug melting, then a massive boost leak.

Best time of the day from me was a 2min 07. Only managed about 2 full sessions

Was a great experience though!

Got home, decided to try and find the boost leak:

30mins later..

[blah_blah]

Also new Cusco camber arms and tension rods came in the day after the track day of course.

I think this will be the last mods on the car for a while, and ill just concentrate on track seat time:

[Leroy Peterson]

damn, tough luck. BKR7's too

howd the teins hold up? tyres grip ok? oil temps?

[blah_blah]

damn, tough luck. BKR7's too

howd the teins hold up? tyres grip ok? oil temps?

I thought suspension wise the car handled ok

Oil temps from what I saw never went past 105-110c after 4 hard laps. But ill review the footage, never pushed the car past the limits of the tyres i dont think

I got Richo to do a test run, ran a 2.03 with massive boost leak and in traffic, he thinks the car has at least another 10 secs in it. Said my tein HA's are ok but has no rebound or dampening

[gtr jet]

Maybe I should get Richo to do a test run in my car. Would love to see what it's actually capable of.

[blah_blah]

On 2/10/2015 at 7:22 AM, gtr jet said:

Maybe I should get Richo to do a test run in my car. Would love to see what it's actually capable of.

Should be plenty of time at Winton

Ok new hoses have come in to replace some torn and worn ones:

Ill put them on the weekend.

Next track day booked for Winton 14 March

I'd be happy with a 1:45. Only second time there. And really only my 4th or 5th track day in 3 years

Will try and the Cusco arms and tension rods put in before then

[Blackkers]

Nice thread. Good read

Got home, decided to try and find the boost leak:

30mins later..

I had the same failure on my R33. Took a while to find also

[blah_blah]

So minor update

Spark plug in cylinder 3 after a few km's of driving:

Compression test on cylinder 3. 150psi. Rest where about 180psi

Pulled the head off.

Did notice some black goo in the chambers. Not sure if concern yet

Pulled the head apart:

Something not quite right, one port looking brand new:

Vacuum tested the ports:

One port something funky going on:

Pull out the injectors, black goo covering on of the injectors:

Dat e85 life

[Leroy Peterson]

Hmmmmmmmm test and clean the injectors while they're out?

[gtr jet]

What injectors are they? Looks like that one could be stuck open or something.

[blah_blah]

Hmmmmmmmm test and clean the injectors while they're out?

Yeah going to get it flow test and cleaned

What injectors are they? Looks like that one could be stuck open or something.

Bosch EV 14 1000

Did a search on SAU and apparently other people have this issue:

Washable stainless filters are not fine enough, the dreaded black gunk seems fine enough to get through them and clog the injectors. I was recommended to install 10 micron paper elements to guarantee it would catch the black crap present in e85. (I assume from the manufacture of the fuel.) Moran refuse to warrant their injectors without a similar filter fitted in the fuel line...

E85 is a great cleaning solution and should flush any varnish buildup through, but this can block the filter internal to the injector, which in the EV14's is nearly impossible to clean.

Yep.

I just fitted 3/4 length Xspurt 2000's in it's rail due to the 1000's blocking with that black gunk. I also fitted a 10 micron paper element filter to trap any further crap in the fuel. It's not the first ethanol car to show these blockages, although mine has been fine.

[blah_blah]

There is extensive talk on it on these forums:

http://codsm.org/forums/showthread.php?t=3965

uote:

Alright, I finished my analysis of this stuff, and my finding is very unexpected. I think it will
probably surprise everyone else as well. This doesn't appear to be forming because ethanol
is "such a good solvent" but because ethanol is a poor solvent. I suppose it should have
been obvious when others said that it "washes right off with gasoline". Why would
something that ethanol is selectively dissolving wash off with gasoline? If this were
something in rubber or from our fuel tanks, wouldn't that imply that gasoline would dissolve it even more readily than E85? Alright, so what is this stuff? It is a appears to be a very large petroleum based
hydrocarbon, similar to Vaseline. There isn't a single hetero-atom in the molecule (ie, the
entire molecule is comprised of hydrogens and carbons), but the molecule is very large. It is
also completely aliphatic (ie, only single bonds in the structure - no double or triple bonds).
Where did it come from? I can only think of two different sources it could be coming from.
It is either something that is mixed in with the rubber hoses that is meant to dissolve away in the gasoline, or it is a trace impurity in the 15% gasoline that is in E85 that wasn't
separated during the fractional distillation process. Because it is such a large molecule, it
wouldn't be very soluble in ethanol and could easily crash out of solution at the injector.

Quote:

So, let me see if I can wrap my decidedly non-chemist brain around this: This "very large petroleum based hydrocarbon", or vlpbh , is able to be completely dissolved into gasoline, essentially becomes part of that fuel, and is burned up in
combustion, never to be seen again except broken down as part of the exhaust gasses out
the tailpipe. However, with ethanol, the vlpbh is more or less "dislodged" from the rubber or
distilled petroleum, and is carried by the ethanol as a separate particulate of sorts, perhaps
partially burning during combustion (that which makes

[scotty nm35]

I think they are looking at it from the wrong end, I believe it is carbon coming back from the combustion chamber, as the intake valve opens. Similar thing happens in direct injection motors as the petrol isn't cleaning the runners.

It is not in the flow path as the ethanol pushes that out the way. The modified 1000's are actually good for this, as the tip isn't large enough to gunk up too much. I doubt there will be a flow difference unless the filter inside the injector is blocked.

Those 1000's I mentioned above had a little filter added in the top, which was the likely cause of the flow issue he had. I never run those little secondary filters anymore, they are too fine and block up easily.

[scotty nm35]

Are they saying the gunk caused the valve to not seat? I doubt it, it's pretty soft...