im picking up a 91 civic hatchback si with i 1.5 SOHC NONVTEC motor in it it is turbo with some internals and runs a 13.5 in the 1/4 mile i have been trying to research that motor compared to others and dont know what to do so if anyone has and opinion on me keeping that or upgrading to a vtec or a b-series let me know what you think and if you have any websites with good info on any of these motors so i can compare thanks

 

This site is about the best you're going to find. Obiviously you didn't read anything before you posted, there are millions of topics on here about B-Series swaps and which is known for what. If you already have a turboed car I would just run that for a while until you get hungry for something more... Then I would go with the LS-Vtec or the CRVtec

 

Do a mini me setup slap a vtec head on that *****. Cheaper in the long run d-series are alot cheaper then B

 

stick with the d. if you want more power, turn up the boost

http://www.d-series.org
http://www.sohchonda.com