supercharger

[masterdave]

Possibly expecting to get laughed at/slated here but if you don't ask you don't find stuff out. My question is: would it be feasible to scrap the turbo on my d turbo engine and use a positive displacement supercharger instead? I know they have been used in compound setups but not by themselves? Surely if you could get close to 20psi with a good flow and intercooler then decent power levels and epic response could be achieved?

[bashbarnard]

of course its possible. im not the person to ask though. probally be far more expensive than a turbo though. i did briefly look into it then gave up if im honest

[Piggy]

It is possible.
Little pointless thats all.

20psi? Possible with a standard turbo.

More efficient 20psi... Easy upgrade to a more modern turbo using same oil feed/drain and a quick bit of work to make an adapter plate

[Stef205]

you aint going to see 20 psi with a charger unless is a rotrex but lets be honest there just belt driven turbos you wont see 20psi from a m45 but maybe a yank m90 or above but they are big old things! The more you rev a charger the less efficient it becomes.

[Piggy]

you aint going to see 20 psi with a charger unless is a rotrex but lets be honest there just belt driven turbos you wont see 20psi from a m45 but maybe a yank m90 or above but they are big old things! The more you rev a charger the less efficient it becomes.

This was my thought but was hoping you would comment... Not expert on s/c!

[Magenta Sunset]

watch some Top fuel Drag racing maybe?

[7057sam]

With low boost you see 7 psi and high 13 max

[masterdave]

From a bit of research the m90s are capable of 20 psi, but I don't think it would be worth the hassle to get it. Cheers for info though guys

[PartyJas]

I run an M90 on my C20XE engine and believe me at 20psi it would need some serious cooling. I'm struggling with mine at 10psi and I have a big charge cooler. The other issue to consider is an Eaton M90 takes 45hp to drive it at 7000 rpm. They do make for a very drivable engine though and flat torque curve. If i were using one on an XUD it would be the Eaton M62.

[Stef205]

I run an M90 on my C20XE engine and believe me at 20psi it would need some serious cooling. I'm struggling with mine at 10psi and I have a big charge cooler. The other issue to consider is an Eaton M90 takes 45hp to drive it at 7000 rpm. They do make for a very drivable engine though and flat torque curve. If i were using one on an XUD it would be the Eaton M62.

Sounds like you have a bad charger then i use a m90 at well above 10psi i see 8 deg air temps and this is on its stock pulley. M62 will be utterly useless as for one it has a clutched 100mm pulley! making around 4psi! If your coating has gone this will be a big part of your temp issue.

[PartyJas]

Is yours a Gen3 or Gen5 charger and is it a stock body or ported.?
Not all M62's had the clutched pulley. Mainly the ones found on Mercedes.

[Stef205]

Gen 3 all stock.