Jump to content
SAU Community

Recommended Posts

Hey guys,

Spent the last 3 months doing a few things to my rb25det and it just died in the ass today. 6th cylinder is letting oil by the piston rings and i think it sounds like it is developing some nasty piston slap!

My list of works completed:

- Reconditioned head, replaced valve seals and replaced valve springs with Supatech valve springs.

- Installed Cometic MLS Headgasket and ARP head studs.

- Installed 256 Camtech cam shafts and 2 adjustable tomei cam gears.

- Rebuilt my turbo at GCG and got it high flowed (stage 2 - with ball bearings, rated @500hp).

- Installed Five-O 660cc injectors (red plug).

- Replaced all gaskets for the top end of the motor.

- Installed JJR Bellmouth dump pipe.

I put it all back together and was able to tune the car upto 8.2 psi and got a nice 184rwkw before all the fun was over.

Even though it didn't work out the best I still had a lot of fun putting it all together and going through the whole project.

What you guys think I should do? Give in and sell it? Rebuild the bottom end? Or just buy a replacement bottom end of a second hand motor?

Ps: thanks to anybody who helped me and answered my questions on this forum - have to admit I did a lot of reading here and learnt a lot about my car!

Link to comment
https://www.sau.com.au/forums/topic/434278-mini-overhaul-of-my-r33-gone-wrong/
Share on other sites

seems like you have kesh......

go forged and stroked rb 30 bottom end. bolt all your shit up and see what you get. then change parts as they start limiting you!

Hahaha let's just say I had cash!

That would cost me like 15k :(

cheapest and easiest option. just get a second hand motor, plenty of guys running 300rwkw+ on standard motors.

if you have the time id pull the engine out and see whats gone wrong.

I was thinking along the lines of getting a replacement bottom end and throwing it in... Just worried about the quality of wreckers.

Wish I had the time right now to rip it apart and see the damage!

buy another stock bottom end for couple of hundred bucks e85 these days 350kw is safe with it no need to waste money building.

Exactly what I was thinking but here's the issue - who's gunna split their perfectly fine motor to give you a bottom end.

Buy a complete running engine, there will be heaps available. This way you aren't up for a top overhaul gasket set and you can do compression/leak down tests. You can't do that with just a bottom end and some questionable build story.

Might give it a try - found an engine for 950$. Hope I don't spend another 2 months doing this for no good result :)

what was the compression of the motor you bought?

It was the motor in my car - did a compression test last Sept and had decent results (can't remember exact numbers). The reason it buckled is because it misfired as a result of bad coil packs... Even though I got the misfire fixed, the damage to the motor was already done.

+1 second hand/import motor, not 2 months, chuck it in this weekend :P , plus might be hard to get a tune around xmas

I wish I could afford it to be honest - need to work atleast 2-3 weeks before I have another crack at it!

faaark!!...all that work for 184kws...i think i would of set fire to it there and then....I put a 5$ bleed tap from bunnings on my stock car with an exhaust and it made 185kw...

what computer you running?

I think you may have misread my post - the engine shat itself and the best reading I received was 184rwkw at 8.2psi. I was planning on running it at 20psi which would of given me roughly 300rwkw. :)

My car now runs at 0rwkw and pours out an awesome smoke show from the tail pipe ;).

PS: Running a microtech.

I just realised - I originally made that post on Tapatalk with paragraphing (and bullets) and when I looked at it on the PC it looks like one massive blob of a post with no structure... thats odd :(

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Wife wanted basket things in the wardrobe in our temporary house. Thought about ripping our the wardrobe and fitting the entire IKEA set, but it's a temporary house and we want to move in a few years. So IKEA advertises this as a 50cm unit, however the actually basket and rails measure 46cm wide. Only issue was depth, IKEA stuff is quite deep, where as the builder special junk is super shallow at less than 40cm. Send it, chopped the rails, then offset the mounting holes, job done, happy wife, less shit scattered all over the bedroom. Did the same to the other side too. Also drove the Skyline shit box today, dropped off oil at Supercheap Auto. I didn't realise they only now take max 2x bottles per visit. I visited 2x Supercheap Autos.  
    • I've seen similar actually in my situation. You never know what tables are attempted to be used when the car thinks it's -99C or +200C. The fail state is not usually that extreme but you know what I mean - it was in my case though! This is where being able to read all the sensors is useful cause you see this stuff really quickly.
    • The above is very important. However as long as you keep timing relatively low, it's plausible to make your own knock ears and plausible to learn to tune with a modern ECU that can do wideband O2 correction like a boost controller. I mean if you only have one viable road to even drive the car on, learning to tinker to this level may be worth doing given you can't do much else with the car...?
    • I find the fact that the rear plate has to be bent inwards at the rear not so bad: but the front is just awful: It's like come on. (these are my very old, now retired/turned in plates) TBH it is a lot of money to fix a minor issue, the fact I said "I'll never really spend the money on doing this" is why people ended up buying them as a gift for a 'car guy' who can be hard to shop for.. for car guy things.
    • I just bent the ends of my premo plates. It even went through Regency like that after the engine conversion and the inspector (a great bloke!) just squinted his eyes and said "I didn't see that". Plates, and how they look, are just something that have zero importance to me.
×
×
  • Create New...