200+ hp from non turbo 13b
#5
Home-brew Rotary
Join Date: Nov 2004
Location: GooseCreek SC
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ha ha. (laughing at replies.)
It seems to me that this question is a classic, and it has been discussed many times.
Note that theres a difference in hp, whether it be from E-shaft, crank (piston engine term), flywheel.
Or.
Rear Wheel hp. rwhp for short.
There are many threads that discuss your question.
There is a search function at the top of the page.
And welcome to da club.
It seems to me that this question is a classic, and it has been discussed many times.
Note that theres a difference in hp, whether it be from E-shaft, crank (piston engine term), flywheel.
Or.
Rear Wheel hp. rwhp for short.
There are many threads that discuss your question.
There is a search function at the top of the page.
And welcome to da club.
#6
Rotary Freak
13B bridgeport using series 4 irons will land you 200 to 240rwhp with a carburator.. 13B peripheral port with series 5 internals will land you 240 to 275rwhp with a down draft webber. and a series 6 engine with a bridgeport and partial peripheral port with electronic fuel injection will land you 300 to 340rwhp.. atleast thats what a landed me..
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#8
Rotary Freak
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13B bridgeport using series 4 irons will land you 200 to 240rwhp with a carburator.. 13B peripheral port with series 5 internals will land you 240 to 275rwhp with a down draft webber. and a series 6 engine with a bridgeport and partial peripheral port with electronic fuel injection will land you 300 to 340rwhp.. atleast thats what a landed me..
#10
Old [Sch|F]ool
#12
gross polluter
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I was going to go with S6 plates for my REPU motor, but decided against it. I dont remember why but I think it was the oil pan bolts, I didnt want to deal with any possible leaks. I am lazy when it comes to my own stuff I guess
The plates are stronger, more meat around dowel pins and bigger ports than S4/S5. There is some advantage.
The plates are stronger, more meat around dowel pins and bigger ports than S4/S5. There is some advantage.
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#17
Emerald Triangle for life
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For a cheap approach to just over 200RWHP, you could always take a page from Paul Yaw's book:
http://www.yawpower.com/sep2004.html
I do have to wonder about the noise level (and fuel economy) of running a full-race exhaust port, even on mild intake ports!
http://www.yawpower.com/sep2004.html
I do have to wonder about the noise level (and fuel economy) of running a full-race exhaust port, even on mild intake ports!
#18
gross polluter
iTrader: (2)
For a cheap approach to just over 200RWHP, you could always take a page from Paul Yaw's book:
http://www.yawpower.com/sep2004.html
I do have to wonder about the noise level (and fuel economy) of running a full-race exhaust port, even on mild intake ports!
http://www.yawpower.com/sep2004.html
I do have to wonder about the noise level (and fuel economy) of running a full-race exhaust port, even on mild intake ports!
That thing can sing! At idle its pretty loud but not totally unbearable. Anything above idle while accelerating up to about 4k rpm is so loud your ears will bleed. After about 4000 rpm it just quiets down again to something actually quite reasonable. Honestly I doubt it will be long before I have a noise ticket under my belt. Fuel economy is about the same, maybe even better than when I was running a stock 6 port motor. But now I have it tuned alot better than before as well. The Weber carb is getting me around 15mpg I think, will check this weekend when I have a bit longer drive. I would love to hit 20mpg highway once I get the carb jetted just right but that might be a bit optimistic.
#21
gross polluter
iTrader: (2)
It runs so nicely! The idle has a slight lope to it and it feels like it just wants to pull. I have been breaking it in and havent yet been able to really get on it. But up to 5000 rpm and about half throttle it really wants to scoot.
After this weekend club drive I will have another 150 miles or so, just about ready to go for the upper rpm range. Its pretty much all tuned now except for the air corrector jets.
Then the dyno in another month or 2...
After this weekend club drive I will have another 150 miles or so, just about ready to go for the upper rpm range. Its pretty much all tuned now except for the air corrector jets.
Then the dyno in another month or 2...