A Boy's Love For His Rb20

[Roy]

It hasnt gone bang...but perhaps the start of the end. One thing though to do a 49 with the problems i had it is still making good power. The hard thing to get used to is the grip from the tyres, the lack of wheelspin ion any gear makes me think its down on power...biut was still overtaking plenty of cars down the straight.

Some test this week will tell me more

[GTScotT]

How many K's before it gave up the ghost Roy?

I seized my last 20, it finally gave up the ghost to the point of total lock on my driveway. It freaking got me home before it totally f**ked out. The next day I rolled it down a hill and clutched it back to life, then drove it to wakefield.

I ended up giving up trying to break it and replaced it with my spare for the sake of it (one I was trying to break had a burnt valve and I picked up a lower K spare cheaper than the cost of fixing it).

Long live the RB20.

[Roy]

Its done just under 60,000kms. Its done a few drift events, a few drag events, its done 2 Dutton Rallys, probably about 10-15 motorkhana days and its done maybe 20 track days?

Hasnt run less then 18psi/235rwkws since about 2005 and often run 21psi and 260-275rwkws.

The blow-by is hardly anything to panic about as it only 2/3 filled the Greddy catch can after 4 sessions at Winton and 5 sessions at Phillip Island. Many cars fill that catch can to the same extent after one session. So its still well within the limits of acceptable, its just that its blotted its clean no blow-by record.

In for compression test and dyno run on Tuesday to see what the trend looks to be

[zebra]

That's a good run

Always seems that after a car has sat still for a while things start to go wrong when you get back into it

[DJRIFT]

I want to go back next weekend as there is another PI day. I have a gearbox leak that stopped me going out and giving it a good go with the right pressures. Car was also knocking its head off in 5th all the way down the straight which was a little unnerving...but kept my foot into it enough to get a laptime

if you dont know where the leak is coming from check the rubber boot on top of the gear box where the shifter goes in. they are common to split. and they only need a small split then they spew oil out with a few revs and a bit of a hill. new boots are around $20 from nissan.

[DannyC33]

Just finished reading this thread!

took me a couple days as ive been reading it at work.

but my god this is an awesome build, very impressed and its good to see people still goin strong with the rb20.

im about to start buildin my rb20 up for my laurel but not lookin for anywhere near the power you have. as its a street car im only lookin for about 220 rwkw.

but its nice to know that i dont need to waste money on cams and shit like that. to make the power.

[Roy]

Yeh dont waste money on cams. Some people seem to get gains from them, you may get a gain, but plenty of evidence around says you may just waste your money.

That all said, my 256/8.5mm Tomei cams are going in over the next fortnight... Just to see if they work any better then the Apexi cams I tried

AND I owe the lil RB20 an apology. It seems the car simply has more grip then it used to and where it used to slide I can now carry more throttle then ever before. It doesnt seem to be down on power after all or any obvious issues with the engine.

So the cooling pressure test came up A-OK. And the best bit was the compression test results were as follows:

Cylinder 1 - 155psi

Cylinder 2 - 155psi

Cylinder 3 - 150psi

Cylinder 4 - 150psi

Cylinder 5 - 145psi

Cylinder 6 - 150psi

Pretty even and I didnt connect a batter pack to the car so the drop off in psi could in part be attributed to the battery draining a little after so much cranking. (its a pretty small, shitty battery that does not hold a lot of charge)

So, the engine now has its own name ... "Lazarus"

[zebra]

Good to hear

E85 with the new cams?

[Roy]

Yep...also got some 105 fuel to try back to back with E85 to see which the engine prefers.

[zebra]

so we will see 30psi? lol

will you do a run on 98 as well to see back to back differences?

[Roy]

I am interested to try the 10cm housing again as with the 8cm housing it stops making power after 19psi. Iam curious to see if the 10cm and E85 make enough top end with more boost to live with the loss of power at 4,000-4,500rpm

[zebra]

Hopefully at those revs it's on the cams and really starting to spit out some exhaust gas and you don't lose much at all

[sav man]

E85 should be a lot better than 105 (and cheaper)

if you only 1/2 filled one of those tiny greddy catch can, your engine is only just run in. I spat 2l out during the the 3 1/2 mins worth of prolouge.

26 cam covers will stop a lot of oil coming out too

[Roy]

26 cam covers will stop a lot of oil coming out too

Wash your mouth out with soap I may have a GTR bumper and rear spoiler on my car but I would never defile an RB20 with lowly RB26 rocker covers.

I am painting the engine bay over Xmas so will play with the rocker covers and breather system then. Should be a lot neater, and also got some things planned for the Plazmaman plenum before I ditch it.

And finally someone was nice enough to take what I think is a cool pic of Lazarus :0

[DannyC33]

wow that is amazing the compression is so good still. my poor coupe which by all evidence i could find had been stock its entire life was barely making 149 across the board. haha.still not bad,

but for you to have been hammering this thing around with as much boost as your running and still have basically mint compression is awesome.

[Boss-zilla]

Wash your mouth out with soap I may have a GTR bumper and rear spoiler on my car but I would never defile an RB20 with lowly RB26 rocker covers.

I am painting the engine bay over Xmas so will play with the rocker covers and breather system then. Should be a lot neater, and also got some things planned for the Plazmaman plenum before I ditch it.

And finally someone was nice enough to take what I think is a cool pic of Lazarus :0

Must..............resist.....buying......another.............32.............arrrrrggggg!

You didnt happen to be in Perth on monday with the cossie? Saw one at a set of lights that looked like yours (from memory) and the gent driving looked like you as well! scary!

[Roy]

I was at Phillip Island on the weekend and I hope my Cossie was in Sydney Must have been my doppelganger

[Boss-zilla]

must have been. was a laugh sitting at the lights then seeing the car/driver and thinking 'there is Roy' knowing full well that it was a silly thought.

[Roy]

This is my first proper attemot at editing footage properly. Took forever but happy with it.

http://m.youtube.com/?client=mv-google&rdm=4oox72m1r#/watch?v=LV-bcbzwrpg

So much grip at present. Out of MG had uncanny amount of grip

[zebra]

Not working for me

what has changed to give you all this grip?