Jump to content
SAU Community

Tomei 2.8 stroker kit for RB26?

Dror

By Dror,
in Engines & Forced Induction

 Share

Recommended Posts

Dror Apprentice

Dror

Posted
Posted

Does anyone have any info on this kit. As far as I can tell it is about $8000 in Aus which seems fairly reasonable compared to the price of other Jap stroker kits for GTR`s. Are the components of lower quality than other brands or have they just tried to be more competitive with the pricing?

Cheers, Dror

Link to comment
https://www.sau.com.au/forums/topic/58067-tomei-28-stroker-kit-for-rb26/
Share on other sites
Dror Apprentice

Dror

Posted
  • Author
Posted

The package includes a forged crank, forged h-beam rods, forged pistons and spacers for the oil squirters. I don`t know what size the pistons are. That was one of the things that I was hoping someone would know. I was a bit off on the price aswell, it is actually $8400 plus gst but I would think that you could get it for a bit less than full retail.

Sydneykid Grand Master

Sydneykid

Posted
Posted
Ok lemme ask you this then...

The stroke goes from ~73mm to ~86mm.

What does this do to revvability? Can you still get an RB30DET up to 8,000rpm?

T

Similar stroke to OS Giken 3 litre and they rev to 10,000 rpm.:)

calvintys Experienced

calvintys

Posted
Posted
Does anyone have any info on this kit. As far as I can tell it is about $8000 in Aus which seems fairly reasonable compared to the price of other Jap stroker kits for GTR`s. Are the components of lower quality than other brands or have they just tried to be more competitive with the pricing?

Cheers, Dror

For 8k,,, i think the main different is the Crank as Full counter or Half Counter,,,, if you compare those to HKS or JUN price.

Scooby Veteran

Scooby

Posted
Posted
Similar stroke to OS Giken 3 litre and they rev to 10,000 rpm.:)

the whole RB30 thing seems great as an alternative. more cubes, what could the problem be?

1. no problem in GTSt as I understand, but still seems to be relatively untried in GTRs and i've heard on an number of occasions that RB30 blocks can crack in 4 wd GTRs unless you spend big $ to prep them correctly. although I don't know SST his comment seems consistent with what I have heard.

2. what workshop can build a good RB26/30 in Australia? ie one that will last for years if street driven and thrashed occasionally. the ones I've spoken to ie ADVAN, AVO etc have all said that it's not as simple as it seems and to do it properly is an absolute heap of $, to the point that it makes the figures spoken of here for the 2.8 kit seem cheap. Better if you can spanner it yourself of course but then see 1.

3. I admire people who do what seems like a straightforward RB26/30 conversion but there seems to be a lot of questions unanswered - hence the HUGE number of posts on the RB30 conversion thread.

don't get me wrong i'm sure some people can build great engines but there are still too many unknowns, making (I think) the 2.8 option better in the long run.

Cheers

Sydneykid Grand Master

Sydneykid

Posted
Posted
the whole RB30 thing seems great as an alternative. more cubes, what could the problem be?  

1.  no problem in GTSt as I understand, but still seems to be relatively untried in GTRs and i've heard on an number of occasions that RB30 blocks can crack in 4 wd GTRs unless you spend big $ to prep them correctly. although I don't know  SST his comment seems consistent with what I have heard.  

2. what workshop can build a good RB26/30 in Australia? ie one that will last for years if street driven and thrashed occasionally. the ones I've spoken to ie ADVAN, AVO etc have all said that it's not as simple as it seems and to do it properly is an absolute heap of $, to the point that it makes the figures spoken of here for the 2.8 kit seem cheap. Better if you can spanner it yourself of course but then see 1.  

3.  I admire people who do what seems like a straightforward RB26/30 conversion but there seems to be a lot of questions unanswered  - hence the HUGE number of posts on the RB30 conversion thread.  

don't get me wrong i'm sure some people can build great engines but there are still too many unknowns, making (I think) the 2.8 option better in the long run.  

Cheers

We have built 4 race RB30/26's for use in GTR's/GTS4's and personally I have done 2. One, in a road R32 GTR, has done over 70,000 k's. Nizpro and RIPS in NZ, for example, have done many more than that. I don't understand what you mean by "a lot of questions unanswered". Ask the questions that concern you, there are plenty of people who can answer them.

There are a huge number of people that have been building big horsepower RB30 bottom ends in Australia (and NZ) for more than 15 years. There are no secrets there anymore. The availability of RB26 top ends is definitely the icing on the cake.

The "huge number of posts on the RB30 thread" is because it is SUCH a good idea SO many people want to get into it.

Cost is the winner, I bought all the parts necessary for a 900 bhp capable RB31 (3.1 litre) bottom end (including the RB30 block and crank) for less than half what the 2.8 litre kit costs. The machining, assembly, bearings, seals and gaskets would cost the same. In fact, such is the commonality of the RB30, the gasket and seal kits are much cheaper than RB26 kits. RIPS sell an off the shelf 4wd sump adaptor for RB30 blocks, our race team fabricator made ours in one day. Plus I had an RB26 bottom end to sell (I used the top end of course).

I am not picking on the retail/imported parts outlets, but you should keep in mind that they have stuff to sell. Why wouldn't they tell you a 2.8 litre kit is a better idea? There is nothing in it for them if you go RB30, they know full well that you can get great quality local stuff much cheaper for RB30's.

Hope that is of some help:cheers:

PurpleR32 Experienced

PurpleR32

Posted
Posted
2. what workshop can build a good RB26/30 in Australia? ie one that will last for years if street driven and thrashed occasionally.

Well down here in Melb the best guy to build an RB30DET is Ben from Racepace Motorsport. He has one in his 33 GTR. It is an absolute weapon that is tracked, driven and thrashed on many occassions. Has built many others and if i was doing one, i wouldnt hesitate to go to him because i know it will be quality.

Dror Apprentice

Dror

Posted
  • Author
Posted

I have been down the track of the RB30 bottom end. I had prices from two credible workshops to supply a prepped block and crank girdle/adaptor and they ranged from $5-$7k and thats before you buy a crank, rods and pistons so I don`t see how that comes out any cheaper. It seems that a lot of workshops will tell you how cheap this conversion is untill you actually come to do it and the price doubles.

I realise that they can rev the OS Giken RB30 to 10,000rpm but I don`t think you can compare a standard RB30 block and crank to the sleeved block and high end forged crank of the OS kit. I have heard that the standard RB30 crank is forged but I doubt it matches the quality of the OS crank.

If anyone can do the RB30 conversion for a guaranteed price and quality I would be more than happy to talk to them. I just hate getting nasty surprises when it comes time to fork out the dollars.

Cheers, Dror

blk180 Veteran

blk180

Posted
Posted

Sydneykid how high can u rev your RB30 i want to do an rb 30 upgraded in my GTR. The car will be street and track driven and will most likey use a GTRS turbo kit and os cross mission gear set and the rest to make it run day in day out.

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • TurboTapin
      boost source Size Garrett gt28 gen2

      By TurboTapin · Posted

      You just need to remove the compressor housing, not the entire turbo. I would not be drilling and tapping anything with the housing still on anyways. 
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      So, I put my boat on a boat. First of all, I'm going to come out and say it. Why is Tasmania not considered a holy goal, an apex that all road-legal modified cars go to, to experience? This place is an absolute wonderland of titanic proportions. If people are already getting club runs for once in a lifetime 30 person cruises to Tassy then I've never seemed to see it. It is like someone replaced the entire place with an idyllic wonderland for cars, and all of the people living there with paid actors who are kind, humble, and friendly. Dear god. After doing a lap of almost all of the place I've found that it's a great way to find out all of the little things that the car isn't doing quite right and a great way to figure it all out. All in all, I drove for 4 hours a day for a week and nothing broke. I didn't even need to open the engine bay. This is by all means a great success, but it has left me with a list of things to potentially address. I also now have a 3D printed wheel fitment tool which annoyingly hasn't got any threads in it to actually assemble it. I might be able to tape it together to check the sizing I actually want to use, but it'll likely involving pulling the shocks out to properly measure travel at least at the front, and probably raise the car while I'm at it, at least in the rear. I scraped on quite a few things and I'm not sure how else to go about it. I was taking anything with a bump at what felt like 89 degree angles. And address those 10 other tasks. And wash the car. God damn it is dirty. And somehow, the weather was perfect the entire time - And because I was on the top of Mt Wellington it turns out it was very much about to freeze up there. I did something I typically never do and took some photos up there in what must have been -10 and the foggy felt like suspended ice, rather than mere fog. If you own a car in Australia, you owe it to yourself to do it.
    • QB6SAGR
      Battle of the broken skylines

      By QB6SAGR · Posted

      Damn that was hilarious, and a bit embarrassing for skylines in general 😂 vintage car life ey. That R33 really stomped. Pretty entertaining stuff
    • cosline
      R32 gtr transmission strength, billet plate

      By cosline · Posted

      Hi, I have a r32 gtr transmission. Does any of you guys have an idea how much power it will hold with the billet center plate and stock gearset? At what power level and use did yours brake with or without billet plate? Thanks, Oystein Lovik
    • Rezz
      Spotted on the street....

      By Rezz · Posted

      Saw this replica police car based on a Mitsubishi Starion XX parked next to a 'police box' (it's literally a box) in Hirohata, Himeji City in Hyogo prefecture the other day. It's owned by Morii-san who is a local Mitsubishi Starion enthusiast. According to a local radio station blog post, he always wanted to make a police car himself based on ones he saw in his favourite Manga comics.  As it's illegal to modify a car to look like a police car and drive on the road, Morii-san tried many times to get permission from Aboshi police station headquarters nearby. They refused initially by after they got tired of that they granted him permission. However, the car can only be displayed on private property and obviously can't be registered as long as the police livery is present. The car was completed at a cost of 1.5 million yen (US$ 10,000) in addition to the car cost. A location was chosen outside Hirohata Police box where the car can easily been seen from the street. Morii-san has two other Starion road cars, both widebody GSR-VRs.
×
×
  • Create New...