What are some good motor conversions for a blown fc! Thanks
 

I have an 86' Rx7 with an 1.3 liter 13b motor/ I have recently blown it and it is the second one in about 3 years . Can anyone help me i was wondering what other conversions are easy and affordable to do. 13bt, 20b, 13b-rew, What would be an affordable and easier way and what do i have to do thanks!

was your engine n/a? im confused. you ask about doing a 13bt conversion, but your sig says you have a 'j-spec racing motor from japan', which could only be turbo. also, nothing will be cheaper than rebuilding what you have currently.

I'm Sorry my J-Spec motor is on my car i was wondering for a buddy of mine who has a n/a and has a blown motor who wants to put a 13bt in his 87 n/a .