Angryrb's R33 Street Sweeper

[AngryRB]

Neo heads seem rare as hen's teeth, rang few wreckers and they wont separate the heads , so stuff paying $2K for the complete engine....and I don't want some neo head that's been out in the rain for 6months or is in pieces..

Need advice on how much I can shave the R33 without it getting silly ( hitting valves, ruining the quench zone etc), thinking of using a 40" ACL head gasket and hopefully nudge it up to 8.5-8.7 to 1????

I figure a stock NA VL goes alright, so with my head slapped on, a GT30 and E85 etc its got enough bolted on the make it a good setup... but if its going to have 120psi per cylinder then I need to rethink this...don't wanna be someone that come on with a "My RB3025 is making no power" kind of thread later on

Edited May 2, 2015 by AngryRB

[AngryRB]

Ok forget what I said before, lol.. its sorted now Bought off an SAU member , even built a mini crate for it, some good blokes on here

Edited May 18, 2015 by AngryRB

[AngryRB]

Moving in slow steps... lol but now I have the major parts so now I just have to not f*&k it up

Took more pics..

That's the exhaust I used before to get the 320kw with the 25, look like it would be loud but very acceptable, its 3 1/2inch all the way, will have a 4inch dump made with the external, should be pornographic, love stainless steel..

I got this Jap muffler off my bro, I wont use it but thought id show pics of its guts, its 3 1/2inch with 2 1/2inch restrictor?? It actually sounded very nice, id use it if I were only wanting sound and 200ish kw, great option for some people..

Edited May 18, 2015 by AngryRB

[AngryRB]

Been buying up heaps of bolt on parts, its not cheap to modify an RB like this lol... although this is cheap in comparison to some builds ive seen, maybe mine is like a beginner/intermediate build hahaha Couple of buys from SAU members I wanna mention, Scotty was great to deal with, also Kudosmotorsport and Ben's supplying me with some VCT adjustable cam gear, these injectors are dam sexy!!

So I tested the Neo head with some industrial crack testing sprays and it leaked terribly so ive taken it to an engine shop recommended by my tuner for a valve regrind and recondition, ordered some Tomei 260 9.15lift cams which are apparently needed to reset the shims.

Not sure about getting springs , being a budget build I think I might take a gamble and see if it valve floats on the dyno but its still an option to replace them at the moment..

So next few weeks gonna try and bolt it together on the engine stand so it can drop in with the box on in one go, but im not a mechanic so could be interesting times ahead lol.. so guys like me with little mechanical knowledge might be interested in the pics to come etc as im pretty amateur and will rely on the old mans fitter and turner skills where skill is needed..

Havn't heard the RB sounds for ages, I hope it sounds pretty pissed off... haha.. extra cubes and extra comp should give some poke.. But lets not get to far ahead , plenty to do yet, just having a few beers so hope this post makes sense

Edited July 10, 2015 by AngryRB

[JH32]

Good work on having a crack yourself! Looking forward to seeing how you go over the coming weeks.

So just going the stock RB30 bottom end plus RB25 non-NEO head? What sort of compression ratio do you think it'll end up with i.e. do you think you'll hit the circa 8.5:1 you were aiming for?

[AngryRB]

Thanks mate, I actually changed to plan and bought a Neo head and will bolt it down on stock RB30e bottom end, it will just get skimmed so very similar to some other builds done recently. Guessing it will be like 9.3:1 zone just from other threads ive read.. Both engine builder and tuner advised against skimming head too much to get high comp , they say it will get harder to tune?? so just gonna take that advice and hope for the best..

[JH32]

Ah nice, at least by going the NEO head you do it once and do it right!

I suppose with the higher comp you're at more risk of pinging but then again with E85 I would've thought you'd be fine!

[AngryRB]

Yeah I thought same but they know more than me, either way it should be quite a lively streeter , its all a bit of a gamble/compromise for the budget builder like me, if she blows then its game over for a long while again lol..

[iruvyouskyrine]

That's the beauty of it. If it blows put another $50 RB30 bottom end in and go again.

[AngryRB]

Got some more gear, cams are due for delivery next week so the Machinist can finish off the head and i can bolt it down

Does anyone know what engine mounts will work so i can close the bonnet, ( once its in there) so far ive read that VL engine mounts will do it...

Edited August 28, 2015 by AngryRB

[iruvyouskyrine]

Standard R33 ones slotted.

[AngryRB]

so i just redrill the stock ones, is that what you mean?

[iruvyouskyrine]

Yeah just slot them to move where it bolts to the block a little lower.

[AngryRB]

Got the tomei cams and waiting on engine builder , was going to run the stock springs and retainers but he reckons go a set of supertech springs and retainers or equivalent which sounds good, but budget is getting blown away ...

I'm waiting on a price from the builder for the springs, but i cant actually find anywhere that sells supertech for the neo, so might have to go some performance springs with titanium retainers... i thought the neo gear would of done this 300-350kw goal though... but he reckons he had to rebuild an RB25 recently due to a cracked stock retainer, but that cant be too common with guys on here running big numbers on stock engines but who am i to debate with the builder lol...

open to opinions and advice here...

Edited September 7, 2015 by AngryRB

[iruvyouskyrine]

Plenty of people here run big boost and make way more than that, and for decent periods of time. Standard Neo cams are capable of over 400kw do you really need tomeis?

[AngryRB]

Yeah i agree, they weren't really needed, but they help fatten up the curve. My goal is area under the curve and try to keep some top end which will probably fall off alot more with stock cams?

Was reading Matt (34Geeteetee) and some others are using performance valve springs and retainers so ill just go with the same..

Edited September 8, 2015 by AngryRB

[AngryRB]

Heads back, ended up getting the performance valve springs with titanium retainers as well as full recondition with VCT feed. Fitted up the coilovers, sits bit higher but have to wait til the engines in to decide final height.

Edited September 23, 2015 by AngryRB

[Ben C34]

Did you get the headed welded up around the front coolant gallery?

[AngryRB]

I think its just grub screwed, looks pretty solid so should be alright?

Edited September 23, 2015 by AngryRB

[Ben C34]

There's a spot that has minimal gasket coverage that is ideally built up with weld.

Laying the 30 gasket on the 25 head will show you where.

Guys get away with out doing it.