Honda Car Forum

its for a 95 honda civic coupe and im thinking on putting nitrous

b20, you should turbo it befor vtech.































you could blow a head.































and its sound retarded if you have nos with out a turbo

Gsr would be a little bit more reliable to use, but the b20v you will get more torque thing is it will not last long if you dont have the block built with aftermarket pistons and rods reason why is because the stock rods on the b20 are only made to be taken up to about 6300 rpms, when you have a vtec head you are going to need a vtec ecu and most vtec ecu's red line at about 8,000 rpms... so in your case i would just go with the gsr but if you have money to spend the b20v is nice. about the nitrous i would stay away from it unless you have money to keep buying new motors or get one built just for nitrous... turbo is the best way to go! goodluck

I'm a huge fan of the B20 engine, but in this case I'd have to go with the GSR engine. Sure you get more torque with the B20, but like the other answer said, it has to be built up before you do anything to it. You'll have to build the GSR engine to get over 7 psi of boost too but you are already steps ahead in your build if you choose the GSR engine over the B20. BTW turbo it,then maybe consider NOS later. You do want reliabilty don't you?

generally the gsr (integra) engine is the better engine, the b20 is the lower performing end of the B-series engines. both are vtec.































the gsr is the B18 engine, there are different variants, B18C1 in the US spec teggy's (acura integra gsr ) and the better B18C JDM version in the honda integra type-r. the b18c5 is found in the US spec acura integra type-r. the b18c1 puts out around 195bhp. thats the integra gsr engine, theres also a gsr engine, found in the JDM integra si-r (not sure which you meant) it puts out 178bhp and has 128ft/ibs torque.































there are many types of the B20 engine, the b20b series are the better ones, though still not as good as the b18/b16 b-series.the b20a (a3/a5) are not considered part of the B series family.































Go for the GSR engine if you really are putting N20 then you will need a strong engine, and it will go in the car easier, and parts will be more available. the b20a series arent capatable with many other B-series parts and will be more work to fit.































**note to everyone, ignore Y answers autocorrect on the spelling of 'VTEC', it thinks its vtech, a cordless phone!**

i would go with a gsr from a personal experience of having a b20vtec on nos didnt even last me a month without my motor blowing something about rod bearing to thin