Well im stuck in the middle of the ever-debatable question. Supercharger or turbo?i have an 85 gsl with a 4 port SP 13B holley carb and intake RB header exhaust and flywheel. How much HP am i lookin at with a 7 in camden? I have the begining to a turbo kit i have everything except a bigger turbo and intercooler, IC piping and a downpipe. so tell me about you SC and how much you like it. Thanks

 

I have ridden in both supercharged and turbochared vehicles. However I will not go into this debate because it has been covered umptingbillion times. Do a search and you will find a more in-depth answer.

Supercharged was a fun ride however it never really produced the hp numbers. There was a local 79 with a supercharger and it put somewhere around 210 to the wheels. This was with a 7".

I went turbo...The reasons are apparent(at least for me). And since you already have parts why not just finish off the kit. Now do a search and make up your own mind.

 

Yea, I'm going with the blower, but you're going to get a ton of differing opinions here. Wait til sonicrat sees this...he's good at trying to make people feel bad about deciding to use a blower ;-)

Rich

 

If it's a question about your fabrication ability, then perhaps a supercharger is right for you. Otherwise, just do a turbo since you have some of the pieces already.

 

Ask CodeBlue, He has one of each.

 

mmmm.

ask joserotary.com his name is jose

email him on his contact.

he has turbod FBand a huge blower on another FB. hes racing guy. just email him

 

i think codeblue removed the blower and is trying to sell it...long story....

Rich

 

Yea but he/she had the car for like 3 years, so I think they are the best to give inpression on it.

 

True. I know she loved the blower setup. People are going to tell you that the turbo is more hp for the money, but the reason I went with the blower is that it seemed to be much easier to install and make it work. I have very little experience with fabricating stuff.

Rich

 

another thing is you can run a higher rear gear than you could with a turbocharger.

 

I like my s/c, quite happy with it. Many people get a very positive impression from it. I am surprised sonicrat hasn't chimed in. He is the stereotypical camden hater with nothing positive to say about it.

 

I make people feel bad about picking the wrong blower.

Stereoptypical? I started the trend!

At least I've got experience with them, and I've also invested the money into finding out just how 'badly' they do perform. Their AE is a joke at best. You're better off sticking a Eaton M90 on it.

If you want a blower, centrifugal or twin-screw. Don't waste your time with a roots (especially one as poorly designed as the above mentioned).

That is all.

 

Ah, the world is right again! Now that that's out of the way, if want to put a Camden on your rotary, do it. It's fun, educational, and somewhat easy (and expensive). If you're looking for *****-to-the-wall power, it's probably not the way to go. If you're looking to bolt on some extra horsepower without needing to fab a bunch of stuff, it's a good way to go.

Just my $0.02.

Rich

 

which one will your engine last longer???

 

That depends on a lot of things...

A camden supercharger will have intake air temps FAR higher than most any turbo application (which makes detonation a likely event). (if you run a turbo @ the same PSI), however a turbo will keep more heat under the hood.

 

I have heard a few upgrades that might...MIGHT come out for the camden. Who knows though a lot of things have to happen before those changes are made though.

 

Unless they leave the roots behind, it's still not going to be very ideal.

 

Like SonicaRat said, if you're going to supercharge the car, give it a good supercharger. That involves fabrication, and time, but what doesn't? If you run a Camden, you don't have much chance to increase your power beyond what you get out of the box. I had reliability issues with mine, but that's because they screwed up my order and gave me the wrong PSI pulley. Three times.

 

Seeing as how you the camden is the wrong way to go, Could you post up some pics and a brief summary of each car with the different types of superchargers (rotaries)?

 

There are 4 basic common types; roots, twin-screw, centrifugal, and axial.

Centrifugal:
It's difficult to find a compressor that fits well with a rotary (although you can get around this by dumping excess unused air to keep the compressor more in it's efficiency range). It has the downside in that boost builds progressively and gives the feeling of lag (worse than a turbo), although this 'lag' is predictable.

Roots:
Terrible efficiency, especially at high pressures. Various designs for the lobes will effect it's efficiency (anywhere from 40-60%), benefits from being positive displacement and having the 'instant' boost, although it's such a large hairdryer you can't get much of any usable power from it.

Twin-screw:
Positive displacement with the ability to have good efficiency!

Axial:
Talk to the guy on the RX8 Club, I have no experience with them.

What more do you want, every dyno sheet I've ever made with every type I've ever used on a rotary?

 

There's quite a few people who've killed those chargers with the 'higher' boost pulleys they were provided, as you did.

 

Problem was, I never ordered a high boost pulley. I asked for 8psi, I got 11. Then 14. Then 22 with the 10 rib kit they sent me. Then they said it was my fault that I ran the supercharger at those boost levels. But yeah, run it over 11psi and the main bearing stack will fall apart in a hurry.

 

Their motto appears to be 'it's your fault for buying from us, bye!'

Uh oh, better shut up before I get sued!

 

ok ok. what would be suited for a daily driver. no racing stuff. but... but...... which will have more engine life.....

no racing stuff....

 

None.

There are too many other variables.

If you're going over which one is better for an engine and it's internals, the one that has the least ammount of heat rise for the same ammount of air you throw in it. This would be a twin-screw/centrifugal/axial/turbo, they all tend to have efficiencies within the same region. You can avoid under the hood temps with a turbo simply by properly using heat shields/blankets/etc. So it depends.