Supercharged or turbo

[FrontBackSide2Side]

I have to ask because I dont understand..why not buy a car with an engine designed for FI and go from there? I always wonder why people want to make an apple an orange. Why not start off with an orange and make it a bigger orange? People always seem to be needing to overcome issues or work around design incompatabilities to make it work and then they are waiting for it to break when going from NA to FI.

That's half the fun for some people. We could all go out and buy an impreza or a lancer but you'd turn up to a track day and be the same as every other impreza or lancer owner there with their off the shelf parts. I think what he's done with this polo is amazing and the fact he wants to take it even further is even more amazing.

[Danni22]

I intended on getting the m62 the same the JRSC kit uses or have they done some internal work to the charger


Thanks for the positive comment I do won't to take it to the next level, iv already owned an evo5. And I found it boring, yes it was 420bho silly fast but it had no character as daft as that sounds

[lewd lude lover]

now that i can equate to. if its character then its about how you feel. If it was my choice I would go charged. Mainly because turbos are 10 a penny so the cool points are higher. Also less hassle and less reliability issues as less parts to go wrong.

imho

[RattyMcClelland]

now that i can equate to. if its character then its about how you feel. If it was my choice I would go charged. Mainly because turbos are 10 a penny so the cool points are higher. Also less hassle and less reliability issues as less parts to go wrong.

imho

Plus is whines like Jennifer Aniston in bed, rodgering.

[nitin_s1]

Supercharged!!!

[106pete]

You can use any charger and just turn the compressor wheels around.

I think the turbo is the cheaper and easier option but sc for drivability but not always reliability?

[nucleustylzlude]

Come on guys, you should know to ask me by now!

Well, I’m a little biased, but having looked at both options I went Supercharger, albeit with the Jackson Racing kit, but I nearly got to the point of going custom too kind of the same way you have suggested. Have you looked in my build thread (link in my sig below)? The first couple of pages has length posts and info on the JRSC kit and supercharging in general. It also has a link (if it still works) and info on a chap in Europe who used an M62 from a Merc (careful, some are M45’s) on his 5th gen H22, pre throttle body of course like you are thinking.

A few issues as have been mentioned, the rotors spin the opposite way in the standard Eaton units, the Jackson kits had the rotors flipped from the factory for our Honda engines. You can do this yourself if you know how, but tolerances are tight in roots chargers, so I wouldn’t want anything to balls it up – find a specialist to do it.

While it’s apart it’s a great opportunity to do some mods for great ‘safer’ gains. A port and polish to the internal casing, removing the Teflon coating from the rotors and port and polish too, open up the inlet and outlet openings on the casing ports. Then it’s new coupler, bearings and fresh oil (which needs to be done as part of a general maintenance thing anyway.

With this flipped rotor supercharger, you’re good to go on the A/C, alternator area, even allows to run an intercooler which is great for avoiding detonation in these engines. However, the roots style blowers characteristics lends itself more efficiently to being mounted after the throttle body, on the inlet path. But in the grand scheme of a custom build, something different, the increase in power would be more than sufficient.

Beyond this route is actually flipping the whole charger over so it sits either in the engine bay, passenger side next to the strut tower or lower down towards the bumper/wing area like the 5th gen Merc SC setup in my build thread. This is trickier to get it mounted to the engine block to ‘move’ with it. But cuts out the hassle of a supercharger rebuild and costs if you can find one in good nick. But appreciate this might not be an option with your tight engine bay.

Option number 3 (and the most elaborate) would be to run a jackshaft across the engine to the drivers side engine bay area. Then create a simple bracket which fixes a pulley to the other side and mounts the supercharger the other way around but allowing more space and a more solid bracket to fix it to the engine (somehow). Hope that one makes sense. There was a 3rd gen (I think) in the US that created something like this. Ingeniously engineered but time consuming and looked a mess in the bay. But it worked!

I still supercharged, just because that’s me!

Need any more thoughts from me, ask away.

I love these little spells of threads on supercharging! Sad or what!?!?

[4thgenphil]

i can't wait to see a 300 bhp h22 rip itself out of a polo!

[Danni22]

It won't rip it's self out lol iv seen 600bhp vr6 in polos ..


nucleustylzlude thanks ill have a good look in you thread I was thinking option 2 and flipping the whole charger, iv got plenty of room lower down ner the bumper but not into the wing area..

So it would be a case of opening it up and flipping the internals, Iv no problem with doing it and like you said a good port and polish would go down well too.

and I was looking into using a charge cooler ( water cooler ) instead of an intercooler what's your take on this?



If a supercharger is going to be a crazy amount of work ill end up going turbo ..

But if I do what would be the best turbo for 300whp?

[EG_H22]

Haha bro make ur mind up.
Mines going in for sleeving its been booked for may
350-400 bhp will see me happy.

A gt35 or hx35 will do us good bro.