supercharger on a prelude

[89lude]

hey guys just wondering has anyone put a supercharger on a prelude before and u can put a blow off valve on a supercharged enigne thanks

[pillow]

no longer relevent;)

[SiR JDM]

as brenden said before he edited :p this was posted in the wrong section, please post it in the right section next time, definatly not an ALL MOTOR question.

In regards to your question, i personally have never seen or heard of a supercharger kit available for the 89 spec prelude. I think youd be better off goin for a custom turbo setup.. my 2c

[metro]

is it possible to supercharge a prelude s? hwo much would you think it would cost?

[xplod_accord]

hey guys just wondering has anyone put a supercharger on a prelude before and u can put a blow off valve on a supercharged enigne thanks
yeha u can have a bov on a supercharged engine

[BiGANG]

yeha u can have a bov on a supercharged engine

i thought u could only put a bov on a centrifugal type supercharger. I dont think you can put a bov on a eaton roots type one,.

[GReY_CVC]

ooo so u can get bov for s/c .... hmm and wat is a centrifugal and eaton roots type?

[BiGANG]

centrifugal is like a belt driven turbo

roots type sits right on the intake manifold and creates pressure by two scrolls turning together.

[h22a jdm]

how come superchargers dont have intercoolers?

[Cold Fusion]

^^ some do, it all depends on the set up and the space avalible in the engine bays.

[GReY_CVC]

arent s/c more inclined power.... but i sort of got the idea they are not as good for hi revving as turbos???.. ne one can tell me wats the real storyyy?? thx

[xplod_accord]

i thought u could only put a bov on a centrifugal type supercharger. I dont think you can put a bov on a eaton roots type one,.
well my mate who has a vt commodore which is supercharged has a bov...extremely quiet tho.

[steve]

arent s/c more inclined power.... but i sort of got the idea they are not as good for hi revving as turbos???.. ne one can tell me wats the real storyyy?? thx

Supercharges dont have 'lag' like turbo's, because they are driven directly off the engine, as engine rpm increases it in turn increases the speed at which the supercharger is turning...
However it takes a large amount of power to turn a supercharger i.e. the bigger the s/c the more power it takes to turn, roughly it takes 30 percent of produced engine power to turn the s/c

So while turbo's are almost power for nothing, superchargers require power to make power.

Also strapping on a s/c, especially centrifugal type puts alot of load on the front of the engine, load that was not accounted for when engine was balanced from factory... engine harmonics/ crank/crank bearings could suffer

[stephen8512]

^ yeah what he said

[AMPERAGE]

Jackson Racing make a great supercharger for the Prelude, however it is designed to fit a 5th gen H22A4 engine.

Someone asked about superchargers not having intercoolers. There's a simple reason for this. Superchargers don't get the air anywhere near as hot as a turbo, as the turbo has to contend with constant red hot exhuast gasses which in turn heat the air. Furthermore, turbos reguarly pressurise well over 15psi - most superchargers only give around 6psi of pressure (variable depending on the size of the pullies used.) The fact that the air isn't pressurised anywhere near as high means that it's not nearly as hot.

Long story short, if you do intercool a supercharged engine, you need to raise the boost, as all the intercooler piping deminishes the already low pressure generated by them. In the end, you have to run higher boost to retain pressure within the intercooler, which in turn heats the air up further. This means that even after being intercooled, the air is still around the same temperature as it would have been had you not intercooled but run less boost. For these reasons, it's not nessacary and in most cases therefore not done. That said, an air-to-liquid will however give better results, but for everyday driving is not practical.

[JasonGilholme]

a centrifugal supercharger needs to be reved hi to get higher boost. it acts the same way as a turbo but instead of being driven by exhaust gasses its driven by a pulley off the engine. This means that everytime your car is revving at 4,000 rpm you will be producing the same amount of boost regardless of your throttle position . this is why i really like the idea of a Centrifugal super charger.

as for BOV's you need to rev it pretty hi in order to get alot of boost to vent so when using it on a commodor that doesn't rev as high as a honda there will be minimal amount of boost that needs to be vented.

hope that helps.

jase

[hurstyboy]

Has ne1 on here actually got the s/c kit for a 5th gen.....if so what were the results??

[steve]

Long story short, if you do intercool a supercharged engine, you need to raise the boost, as all the intercooler piping deminishes the already low pressure generated by them. In the end, you have to run higher boost to retain pressure within the intercooler, which in turn heats the air up further.

In a closed system, pressure is equal and undiminished in all directions...
Before or after the cooloer, it doesn't matter. If you pressurise a system to 6psi(for example) and it has 1000 intercoolers and 100 meters of piping, pressure will be same at the throttle body as what it would be at the s/c outlet...

What will increase is the inlet tract, which increases poor throttle response ie 'lag'

the low boost most factory s/c systems produce along with not being exposed to high radiant heat like turbo systems is the reason they dont get utilised that often, that and cost