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1. the nengun website has HKS GT2835 kit but only in 0.68 A/R. My power goal is 300rwkw. Would this smaller a/r make that power? But the response would be awesome thou! It seems abit small for that power level and mite choke it huh? I have tomei poncams which may help get me there.

2. i have a set of nismo 480cc drop in injectors and tomei fuel pump. If i use a fpr would the injectors have enough flow for that power or max out?

3. Any idea as to what my RB25DET's engine displacement would be if i get 40thou pistons? What kinda extra power would i be geting? Probally very minor i assume.

4. Since the GTT has standard GTR rods, couple this with forgerd pistons, what sort of power levels can the bottom end handle? RELIABLE mind you :) Since bigger piston rasies compression, what thickness gasket would be ideal for around 8.7:1 comp? thinking 1.6mm

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The rb25 (86x71.7) is 2498.95cc's.

0.040" oversize would grab you a whole 58.45cc's.

One whole scooter. lmao. In total 2557.40cc

Its not far off the RB26.

(86x73.7) - 2568.65cc's

Rb26 with 0.040" oversize 2628.74cc's.

If your really chasing every cubic inch throw GTR crank in to the RB25 and run 87.5mm pistons.

That will grab you 2659.04cc's or 101.64cc's so 2 scooters. :)

If your doing pistons your best bet is to retain factory quench that aids low and mid range torque, economy, emissions etc.

Use the pistons to grab the comp ratio you are after not a thicker headgasket.

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1. I don't think so.

2. Should be fine with small increase in pressure.

4. 300-350rwkw. Put it this way, you wont be near the limit with the setup you have planned. Put it another way, if you get near the limit you will have created a car that is not too fun to drive due to massive lag.

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