Is there anyone who has JRSC?


we had one for a year on an ITR, produced 209 whp and eventually melted the pistons, running on a Hondata ecu all properly mapped too,

i think for your money 209 whp can be obtained NA without the need for putting a massive source of intake temperature heat onto your engine!!
 
Wouldnt the JRSC with aquamist or a cool box help?

My friend had a B20 vtec with JRSC and it produced 250hp and 200lb at the wheels.
 
Civic Zolee said:
Why do you think that? Do you have experinces? I would use it for Daily driven car? An extra 50hp would be perfect for me! Do you have any other suggestion?:drive:
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i wrote a thread about it actually:

http://www.ek9.org/forum/other-tech...ochargers-thread-pros-cons-all-explained.html

this is from that thread:

blinx9900 said:
#4 Which is much better, Turbo or Supercharge?

this is hotly debated issue, turbo is free horsepower as it uses exhuast energy to make power, supercharger uses the crank to make power so it actually takes power to make power, usually takes about 15-30hp to spin a supercharger.

there are 2 main kinds of superchargers ROOTS aka positive displacement and cintrifugal. each has an intended application and accels in its own area, read on to learn more about each type of supercharger and turbochargers:

ROOTS/positive displacement supercharger
pros: easy to install, boost pressure is instant so as soon as you hit the gas you have loads more tq and hp even at low revs.
cons: runs off the crank so its not as efficient as a turbo, by design as rpm increases efficiency decreases so these things usually max out at around 12-15psi and dont make very much power past that. they are very hard to intercool so you get a lot of hot air in your motor which can cause detonation.
what there good for: low revving engines, vehicles that tow/haul, street driven cars that dont want the complexity of a turbo or centrifufal SC and dont mind sacrificing hp and tq.

any vtec b-series motor with this type or SC will have approximately 210whp or below, most likely below and the top end power will not be very strong. but you will have more tq at lower revs. i know there are some people who have made 250-280 on these superchargers but its not that common for the average user.
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blinx9900 said:
i wrote a thread about it actually:

http://www.ek9.org/forum/other-tech...ochargers-thread-pros-cons-all-explained.html

this is from that thread:
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Thanks for the infos. I knew it before that turbo is much effective, but How much is for good quality turbo kit?
I have 81.5 stock bore I couldn't go on high boost! Is there any reliable low boost kit for max 2000$? It's my daily driven car!

(I don't really understand me, because my new NA B18C engine hasn't been breaked-in yet and I think about to boost it! :naughty: )
 
I know that the jrsc on the k20 engines the gain's in torque and power are ok for the money,and work very well if mapped rite but i dont know of anyone with a jrsc on an ek9,if ya ask me turbo it instead ,much cooler intake temperatures with a turbo/intercooler set up ,as the jrsc's dont have an intercooler on the set up
 
vtec said:
if ya ask me turbo it instead ,much cooler intake temperatures with a turbo/intercooler set up ,as the jrsc's dont have an intercooler on the set up
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ya took the words right out of my mouth! you might want to run a thicker head gasket also.
 
no roots type SC would be good on a high compression engine, main reason is because produces too much heat and you'll need high octane 98 minimum to safely run it, otherwise not worth just boosting 3psi.

I'd prefer Centrifugal type over Twin screw and roots type on a Type R engine.. why? To maintain that original N/A vtec delivery feel :nice:
 
Don't go for the herd mentality. While the JRSC was developed in an era that didn't have much support and options were limited and most have generally been rendered extinct, you can find a lot of good information on how to produce a good combo that will give great instantaneous real world response.

Try telling Larry Widmer that the JRSC is useless or LHT out in Florida with their aftercooler setup that they designed and later patented.

Turbo Installations by LHT Performance

1989 Honda Civic Si - Featured Vehicles - Hot Rod Magazine
 
RagingAngel said:
Try telling Larry Widmer that the JRSC is useless or LHT out in Florida with their aftercooler setup that they designed and later patented.

Turbo Installations by LHT Performance

1989 Honda Civic Si - Featured Vehicles - Hot Rod Magazine
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i will gladly tell him his products are junk! all his cars are making 220-240whp, his most powerful car is making 288whp and 212tq and its a 2.0 which is crap for all the work and money they spent.

my car is making 333whp and 260wtq! my car is a 1.6, i have cast pistons, i run it on 91 octane fuel and thats only 10psi creeping to 12.

a properly sized turbo will make more low end tq and more top end hp at the same boost level as the JRSC kit even with the aftercooler...

even jackson racing themselves are slowly moving more towards the rotrex superchargers over there crap roots 100 year old technology...
 
blinx9900 said:
i will gladly tell him his products are junk! all his cars are making 220-240whp, his most powerful car is making 288whp and 212tq and its a 2.0 which is crap for all the work and money they spent.

my car is making 333whp and 260wtq! my car is a 1.6, i have cast pistons, i run it on 91 octane fuel and thats only 10psi creeping to 12.

a properly sized turbo will make more low end tq and more top end hp at the same boost level as the JRSC kit even with the aftercooler...

even jackson racing themselves are slowly moving more towards the rotrex superchargers over there crap roots 100 year old technology...
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NA, Turbo, and Superchargers all have different qualities. Superchargers can have seperate cooling systems just like a turbo and they can make good power with a progressive NA type powerband. Turbo's obviously have a certain amount of lag. And trying to say that turbo's are "free HP" is wrong. The exhaust still has to work to spin the compressor vs. a standard header.

Wildmer's motors are real achievements considering they make 150HP/liter NA, in a reliable street motor on 91 octane, just like your car. Comparing a highly built NA motor to a built turbo motor is like apples to oranges. Even if his methods aren't the cheapest route to big HP you have to appreciate the information and products he gives to the honda community, along with his work as an engine builder.
 
for the first time Dino you have me very confused...

Dino-Spumoni said:
NA, Turbo, and Superchargers all have different qualities. Superchargers can have seperate cooling systems just like a turbo and they can make good power with a progressive NA type powerband.
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im comapring turbo to SC who said anything about NA? i never said SC cant be intercooled...

Dino-Spumoni said:
Turbo's obviously have a certain amount of lag. And trying to say that turbo's are "free HP" is wrong. The exhaust still has to work to spin the compressor vs. a standard header.
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i never said a turbo is "free hp". regardless of lag a properly sized turbo will make more low end tq and top end power than a roots, ive tested them on many customer cars and seen other people get the same results as well.

Dino-Spumoni said:
Wildmer's motors are real achievements considering they make 150HP/liter NA, in a reliable street motor on 91 octane, just like your car. Comparing a highly built NA motor to a built turbo motor is like apples to oranges. Even if his methods aren't the cheapest route to big HP you have to appreciate the information and products he gives to the honda community, along with his work as an engine builder.
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who are you talking about? all of wildemers motors i saw that i am referring to were supercharged with his aftercooler kit, whats all this NA talk? if he was making all that power NA then hell yes thats impressive, but all the numbers im refrencing were on boosted cars...
 
Always a good discussion about these 2 options. SC is good if you have the power to turn them. But honda's dont. If you put on on a nice V8 you can get some good power. But at the end of the day you'll never get as much power out of a SC as you will a turbo.
 
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