hello everyone!!!!
i am a new member and i have an 87 rx-7. it has the 13b motor that was converted to carburated, ported complete high flow exhaust. i just bought the car and am still waiting for a list of mods that have been done. i had the car dynoed two days ago and i have 248 rwhp. this isnt to bad except i want to do a turbo and nos. my problem is this.....does anyone know if i can do this on a carburated motor???????????? or is there a super charger that could work w/out having a huge blower through my hood????
thanks in advance for anyone who can help!!!!!!!!!!!!

 

You should probably ask the 1st-gen guys about turbo'ing (or s'charging) a carb'd car. Not many people here will be able to help you.

You need to find out a little bit more about the car before you think about nitrous - what compression, porting, etc has been done. The N/A 13B takes well to a 75-100 shot, provided you've got the fuel and spark adjustments to run it safely.

Having said that, congrats! 248 RWHP is a LOT of power from an n/a 13b! I'm interested in seeing what setup you've got. Please let us know!

Brandon

 

thanks for your help!!! as soon as i get all of the info on the car and after i paint it, ill post the mods and some pics. but im climbing the walls here to get som more hp!! thanks again!
Tom

 

248 RWHP isn't enough? Hahaha You're funny - most TII guys would be VERY happy w/ almost 250 hp.

Seriously, my first suggestion would be to upgrade the suspension - it'll make the car "feel" faster, and it'll be much more of a blast to drive

In any case, good luck and have fun!

Brandon

 

Yeah I agree with No7Yet. You might want to think about brakes too.

 

LOL....First mod: reinstall fuel injection system...

Sorry, couldn't resist.

 

LOL, yeah i should but the car was already converted to carb. i really dont know a whole **** load about this motor to convert it back or why it was even converted in the first place!!!

 

So you have no idea how much porting has been done?

 

Man 248 rwhp? Your not happy? Damn, thats like 290 at the flywheel. Over a 100 more than I got and your lighter. Take your car to the track and let us know what you pull.

 

i know there was a lot of porting how much exactly??-that i dont know. what i do know is that this car is a whole **** load faster than a stock. i was spinnin the wheels in 3rd, no problem. it just feels kind of heavy to me....

 

ill take it to the track sometime this week. i got this friend w/ a 2000 civic si who keeps bugging me to race and of course i talk my **** to but i dont want to lose to that rice rocket so thats why im looking for more power cuz his car is a lot lighter than mine

 

if u have that much hp and ur worried about losing to a si then give ur car to me ill take it ...u can take him...i can take a stock si any day

 

in the si he's got cold air intake header exhaust lightened fly wheel cam pulleys underdrive pulleys
he runs about a 14.9 at the track. plus he a excellent driver, where this is my first standard car in about 3 years. thats why im nervous. but hey ill try it and let everyone know!!

 

Your car would be in the 13's easy

 

i hope so that would be cool **** if i could pull it off!!! of course low 12's would be nice.........lol

 

OK I need the to everything thats been done to your engine cause I need to do it to mine! Really, thats a lot of HP

 

as soon as i get the list ill post it for you. the car really is fast as hell
i guess the guy who built it made a 13b turbo that he put in i think ans austin healy that was running 8's on 95 octane
ill let y0ou know

 

man how much TQ? and where do you make the peak HP? Do you have a Dyno sheet? Those are great numbers.

 

 

I don’t think we’re getting the complete truth here. Only a peripheral port 13B would make 248rwhp with a carb. You might get it out of a well set up injected J-port, but there’s no way a carb’d street port or bridge port will make that much power.

 

Ya thats what everyone says but maybe whoever modded the car knows sumin everyone else doesn't know.



Oh do you got the dyno sheet?

 

yea thats a **** load of power, is he tellin the truth he can prolly get hi 12's with some weight reduction and good driving

 

Lets see 2600-2700 lbs and 250 rwhp you will be able to beat pretty much any honda out on the road except for the motorcycles. Hell i think that the cars and motorcycles share the same engine.

 

http://www.atkinsrotary.com/supercha.htm Carb-SuperCharger

 

the guy who originally built the engine said that the car is barely street legal. im still waiting for a list of mods from him though. but i have complete faith that the dyno was accurate. ill post everything once i get.
maybe sometime we could all meet and..............race??!!