Borci88

Can't say I'd be keen on those Leigh

You quoted him and wrote something that made more sense

You f**ked your edit. Also, he doesn't want to imply, he just usually posts photos of his expensive assets

Gonna go look at a Honda Accord Euro today... in f*kkin Inverloch

Did you actually lay down $50k based off Birds recommendation alone?

Teach me your ways

That was what stopped me as well

2:1 odds I'd be getting on that

Clean it all, get rid of all traces of oil and go for a drive to see where it starts off again. Bets are on Rocker Cover Seals, Cam Seals, Crank Seal.

Sometimes it's hard to see a cam seal leaking, usually you'll see it down the side of the lower cover and pooled around the crank. It's all about finding the highest point that the oil is leaking from, oil can't drip upwards after all.

What do you mean A4 sized oil leak? Bruh cars oil pressure usually rises with revs, you should know this. More pressure = More likely to leak If it's coming from the front then it's likely to be Cam seals or Crank seal.

Possibly, we don't think it'll work though, more investigation is needed definitely. Same here, you have to remember that the NA had a higher compression than the Turbo models, and therefore longer and thinner intake runners were a benefit to that already gutless motor They are, unfortunately it's not that simple as RPM usually keeps it simple in the head department, only a very small amount of motors have been built like this, and whether or not an NA head has ever been used, I'm not sure. That's how I knew about the Honda piston, the builder said that there is a Honda piston that will do it but he couldn't remember it off the top of his head. Therefore I've been searching to find one but haven't had much luck. This is unexplored territory at this point I believe.

Also to settle your minds, I'm a mechanic and other than machining the head, this isn't anymore expensive or cheaper than going a turbo head. If it works and its good then we've opened up a new line of thinking with RBs in Australia. If it doesn't work then it puts that idea to rest, this is more R&D than anything as I can swap the heads over on a weekend at work.

Do we all know that the NA head won't flow enough or are we just looking at pictures and going nah I don't think that will work? Because it doesn't sound like it's been done before and I'm building it for torque (thus the 2.8, thus the E85, thus the VCT, thus the smaller ported head). The car made 385kw earlier, this head will more than flow that, it's not a waste. I'm doing it to test a theory, Regardless of all that it doesn't answer my main question of Piston. Port size is irrelevant, I need to find out what piston will work with a 52-52cc combustion chamber and an RB26. RB30 stuff doesn't work I understand. Custom is looking like the only option, but thought I'd swing it past you guys to see if there was an off the shelf option.

While you are correct porting it would probably make it more efficient, I'm more interested in torque rather than peak power, and porting the head isn't necessarily going to help that. I've done research into putting VCT into a 26 head and from all accounts you can't do it without going the Otomoto kit or going VCAM. I know of one person who did it himself in his garage but he hasn't revealed details of how he did it.

Fair enough! Thanks for your input I think it was Big Red (the time attack 32), but I can't remember off the top of my head, I'll have to ask. Theres no reason why they won't flow 500kw anyway. Regardless though I'll be aiming for 400kw not 500, but the scope for future would be nice.

I think we went 8.7:1 or so on the last build as just an RB28. There was nothing wrong with street driveability. I will take what you've said on board though and swing it past my engine builder to see what compression ratio would be ideal and what we can achieve. But I can't start working out compression ratios until I can find a piston that can be made to suit. Otherwise I'll just go most likely a custom Wiseco piston. Have you dealt with any of that sort of thing before? This will be a track car as well as a street car.

That was the reason for buying the NA head. It's been proven to flow over 500kw without porting, it's more than enough for what I need. Good question Piggaz, I guess because I will have the option of Flex Fuel. Realistically it's around standard compression with a torquier head with VCT, 2.8 litres and E85. I shouldn't have a problem with bottom end torque and don't necessarily need to go higher comp? Thoughts?

Hey guys, Currently building my motor which was originally an RB26. It now has an RPM 2.8 kit in it and I'm adapting the RB25 NEO NA head onto the block. Due to the NEO head having a head cc of 51-52cc this means I have to change what pistons I use instead of the normal RB26 pistons. I'm aiming for a compression ratio of 8.5:1 to ideally 8.7:1. I'll be running E85 at all times. I need a piston pin of 21mm and a compression height of 30mm. What pistons does everyone use? Everything is pointing towards getting a custom piston made. I've also heard there is a Honda piston that would work with small modification but I can't find anything that would suit. ACL no longer make the pistons to suit. I believe I'm looking for a flat top piston or one with a small amount of dish.

How many of you lads get nostalgia with this choon https://www.youtube.com/watch?v=slN6U6jNDBU

In other news...

It is interesting that only 6 cars out of 120 went faster than 1.25 though as well..

While you are correct, all the praise I've seen are from dudes who own S13s or AE86s or similar on chopped springs so it's a HUGE upgrade for them, same story with the Fords. I'm yet to be impressed by a set yet, always been a let down unfortunately. That's not to say that cars can't be transformed with Shockworks coilovers, I just don't think they deserve the massive following that the drifters rant on about, in my experience anyway.

I'd say reasonably, he's got a quite a few engines on the cards. I'd imagine he could do it sometime next week or the following though.

Hahaha yeah no, don't do this.