I want to run the jdm type r with spray and im curious to how much hp shot of nitrous the stock jdm type r can handle. Ive had a stock ls in the past that i sprayed a 75 hp shot everyday and it handled just fine.

 

they handle 150 shot for a limited of time!

 

If it is completely stock from factory I personally try to stay around a 75 shot - you can push a 100+ but even then your risk is greater than the reward. The problem is the extremely tight piston to wall clearances that are ran on these engines. This coupled with the piston rings not being gapped for it as well. There have been people that run 100+ every weekend with great success / others don't last long at all. It's all in the tune and how the engine was built. So if you can't afford to replace the engine then stay with a 50-75 shot and make sure your tune is good.

 

Thanks

 

i ran a poor mans type r build which was ls bottom end with type r pistons with ls rods that were hung wit arp rod bolts,a gsr head built buy portflow skunk2 stage 2 cams tuned on s300 and ran a 120shot my car made 309hp on the dyno spininning my 24.5 slicks on the dyno and it ran 11.30 in a 1/4mile.if you have all this done it could be possible to get the same results,but if its completely stock stick wit the 75 your on.if you have any questions ill be more than happy to give you my input just pm me k...

 

like mentioned, the tune will be a huge factor. Your exhaust valves wont like any amount of nitrous though and going past 100 hp on stock exhaust valves is asking for premature failure IMO

 

Personal experince with my USDM ITR motor, ran a 125 for over a year on weekend racing.

I would recommend a 75-100 at most.