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  • 1 month later...

Spool Imports Rebuild Kit supplied Ross Pistons 8.5:1 1mm oversize which was available instock the other was the CP in 8.5:1 but they didnt have the 1mm oversize instock. I wanted 9.0:1 but cost factors and the excellent deal Spool did me was to hard to pass up. My machinist and engine build have managed to get it back to between 9.1-9.2:1 by decking the head and block surface. Its a streeter and I didnt want to run 20+psi on the way to work or home at night lol tired I still think I might get a bigger turbo and run some big numbers later but as a daily street car 280kw with positive boost at 3000 was my aim.

Spool Imports Rebuild Kit supplied Ross Pistons 8.5:1 1mm oversize which was available instock the other was the CP in 8.5:1 but they didnt have the 1mm oversize instock. I wanted 9.0:1 but cost factors and the excellent deal Spool did me was to hard to pass up. My machinist and engine build have managed to get it back to between 9.1-9.2:1 by decking the head and block surface. Its a streeter and I didnt want to run 20+psi on the way to work or home at night lol tired I still think I might get a bigger turbo and run some big numbers later but as a daily street car 280kw with positive boost at 3000 was my aim.

Sounds great dude, 9.1-9.2 is awesome! Get a HKS 2835 Pro S for those goals in my opinion. Joeyjoey off this forum will most likely be selling a complete kit soon.

sure is a f**kload of money for street car

I am assuming the engine was stuffed and so he was forced to rebuild. Whats the difference in price to a standard rebuild? 3k? I have seen people spend an extra 3k in worse ways for a street car. Now he has a solid engine that he can lean on later on.

Yeah it spun a big end bearing and lost oil pressure as you can see the rings were shagged.

Price difference was exactly that $4000 more total to do things right first time.

Head had 3 bent valves 2 exhaust and 1 inlet I believe so they were replaced along with uprated springs. Machinist called it a overhaul and refresh described as "what should be done" by my builder not a no expense spared porting they flow well from the factory just time spent making sure it's as good as it can be.

the new GTX3071 would go alright?

Still yet to be proven. Either way it will be less responsive than a HKS 2835 Pro S but will make more peak power. 2835 Pro S is proven to make 280rwkw so thats why I thought it would meet the thread owners requirements.

GT30R Front with a gt28r core and avo turboworld custom rear housing purchased off a friend. His Stagea made 277kw ATW on 18psi stock 2.5 NEO with almost stock throttle response so will be very interested as is my friend with the result on essentially a 2.7

On that am I right to think it is close to a 2.7 as it is a 2.6 with a 1 mm oversize bore and 1.2 hgasket?

  • 2 weeks later...
  • 4 months later...

There's a billet gear N1 pump, for sale on the forums. Seeing you have spun a bearing, any oil system/control mods planned?I'm running a nismo pump, oil restrictors and bigger sump on my 25/26.

Edited by WHITE gtt

I have a N1 Nissan Genuine Pump now and restrictor in the galleries to the head so considering the primary usage of the motor to be street so sustained High rpm will not be a REALISTIC option. (Training to be a cop so High Range Speed Fine and HOONING would not look good). Running ACL Race Bearings so with good maintenence I am imagining it will be fine.

If I go drag racing or circuit I am going to run an oil cooler and a litre extra oil as safety because that is how the guys on here tend to manage it. I have oil pressure and temp gauges now too!

Also I have removed the standard clutch fan and radiator so now running twin 12 inch thermo fan and alloy radiator with the switching control of the fans. I could not believe how quick the car built revs after the change .... must of had a considerable load on the old wore out clutch fan

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