Opinions on stroker kits?

[Oakville]

Just satisfying another one of my dream car's questions. Somewhere along the line of building my car id like to stroke it out to 2.8L, I've heard many good things about the HKS kit. Has anyone here done such modification?

[Bignate]

Just satisfying another one of my dream car's questions. Somewhere along the line of building my car id like to stroke it out to 2.8L, I've heard many good things about the HKS kit. Has anyone here done such modification?

Talk to Allan. I vaguely remember discussing with him piecing together a sort of frankenstein stroker kit that worked out to like a quarter the price of the HKS, Tomei, ect. I'm sure he can chime in on this one.

[giannis rb]

why dont you find an rb30et block and make the car rb30dett?????

[Skym]

RB30 seems like a good choice.

This is Nissan RB30 bottomend vs RB26 bottomend with same turbo setup -

http://4.bp.blogspot.com/_vhpEGyEVhes/SE7_1idVURI/AAAAAAAAAzA/BYk7YSej5Sk/s1600-h/Dick+GTR+powe5r.jpg

I think both bottomends are forged. But what that dynograph doesn't show is the response difference, which the RB26 is said to be better with stock bore.

Supposedly HKS 2.8 kit, Nissan RB30 bottomend = similar results.

HKS has 2x 2.8 litre kits. One is a HKS special dragracing shortblock with sleeves, spacer plate, etc and the cheaper 2.8 litre kit is for I think is stock N1 RB26 shortblock.

Supposedly the Nissan RB30 can handle up to 1500hp with R.I.P.S mods to shortblock and still have no shortblock reinforcing like sleeves or partly filling the shortblock with VHT block filler. R.I.P.S runs a 1 piece cradle upgrade which is said to eliminate the need for block filler. Nissan seems to run a similar cradle setup on R35GTR V6 engine.

[mcfly]

what's wrong with a 2.6?

and is rips not running a 7 piece cradle. like the domestic guys do.
http://www.eliminatorproducts.com/images/sce/Cast_vs__Billet_Caps_600.jpg

[Oakville]

Nothing wrong with a 2.6, Ive just heard good things about stroking a N1 block to 2.8. After browsing around the forums and talking to a lot of owners, ive kinda decided, to build up my own engine skills as well, find an N1 block and start piecing it together myself, 2.8L HKS kit, etc etc. It would cost a bit more, but I want to be able to do this whole build myself, and I can honestly see myself putting a lot of dough into this car, id like to do it moderately big, and done right from the get-go.

[Skym]

Interesting.

Your correct Mcfly, mutiple piece -

http://www.gtr.co.uk/forum/112882-rips-cnc-billet-mains-kit-suit-rb25-rb26-rb30.html

I must have looked at adaptor plate and thought 1 piece.

[Allan74]

Knowing what I know now about RB26, I would NEVER run an off-the-shelf 2.8L stroker kit in my car, because frankly, no-one has done it right.

Jun comes the closest with it's 2.7L kit, because they use 75.7mm crank, 121.5mm Rods and 29mm pin height pistons. Nearly everyone else throws in a stroked crankshaft and compensates with 119.5mm Rods.

Yes, the numbers are there...and have been for years. Blah Blah Blah.....guys have done this and that. Well, NOT IN MY MOTOR thank you very much.

If I were to put together a 'Stroker' kit for myself today, it would include the following:
- Nismo GT 77.7mm Crankshaft.
- Manley Turbo Tuff I-Beams or Nismo GT I-Beams @ 121.5mm.... 'FACTORY SPEC' Rods.
- Custom 28mm Pin Height Pistons (vs 30mm OEM).

On average, it costs as little as $100 USD MORE to have a set of Custom Pistons made up and in some cases, THE SAME PRICE as Off-the-shelf Pistons from JE and CP.

Doing it this way (Compared to, say, Tomei's Stroker Kit):
- Increases available RPM.
- Broadens TQ on top and bottom of curve.
- Maintains safer Rod Angle, Ratio, Bore Wear etc. etc.

It's not always about the size of the crank. Rods are pretty important as well.