Magna Parva insulator

[Meatball]

Has anyone ever proved that the Magna Parva insulator will increase power in our engines?.

[OscarT]

I think that Trackcar has carried out some back to back comparisons showing a worthwhile improvement. So it appears to work but I'm just not sure why it would. Is it because it keeps the induction air cooler or because it retains the heat in the inlet manifold.

[That Daddy]

It keeps the air cooler in the plenum and unshrouds the intake trumpets(by raising the plenum),so double bubble

[spend]

That Daddy said:

.. unshrouds the intake trumpets(by raising the plenum),so double bubble

Where do you fit it?

Dave

[GreenV8S]

That Daddy said:

It keeps the air cooler in the plenum and unshrouds the intake trumpets(by raising the plenum),so double bubble

The magna parva insulator sits under the trumpet base, so it helps keep the trumpet base / trumpets / plenum top / throttle body etc cooler, but doesn't do anything to the trumpet clearance. However, shortening the trumpets takes care of that nicely. The SC Power spacer lifts the plenum top (so better clearance, but the trumpets are still too long) but for some bizarre reason has been made from metal instead of an insulator so there's no thermal benefit that I can see (despite what their advert says).

Edited by GreenV8S on Saturday 13th October 01:29

[That Daddy]

Doh,my mistake it was late,i would recommend doing the trumpet mod at the same time anywaysthe spacer i have seen was made of a resin material and assumed this was that brand(magna parva)i dont think i would waste money on a metal one though

Edited by That Daddy on Saturday 13th October 09:06

[spend]

That Daddy said:

Doh,my mistake it was late,

No it wasn't.... The reply was early!

Dave

hmmm panto

[That Daddy]

spend said:

That Daddy said:

Doh,my mistake it was late,

No it wasn't.... The reply was early!

Dave

hmmm panto

Mine wasent Spendy plus i know more about cars than you,remember the oil filter lesson

[Meatball]

No proof i guess

[spend]

That Daddy said:

spend said:

That Daddy said:

Doh,my mistake it was late,

No it wasn't.... The reply was early!

Dave

hmmm panto

Mine wasent Spendy plus i know more about cars than you,remember the oil filter lesson

Oh you are wonderful PhatDaddy, since you are so good at delivering lessons would you mind translating "Mine wasent Spendy" into English for me, please.

Dave

Hmm War of Derision

[trackcar]

Meatball said:

No proof i guess

yes i put proof on PH about a year or more ago .. I did the testing work now you'll just have to do some PH searching work and find it.

[eliot]

Ive got a friend with a brand-new one who's open to offers - It didn't fit under his seight bonnet.

[Pupp]

eliot said:

Ive got a friend with a brand-new one who's open to offers - It didn't fit under his seight bonnet.

? The MP one is no more than 5mm thick

[Meatball]

trackcar said:

Meatball said:

No proof i guess

yes i put proof on PH about a year or more ago .. I did the testing work now you'll just have to do some PH searching work and find it.

Got it...2%-3%

[That Daddy]

Spend,your English & Spelling is better(no question),but my knowledge of thinks mechanical blow you awaythink i should of attended school more ofter though

[350Matt]

Chaps

The isolator is 2mm thick and should reduce the running temperature of the plenum by 10-15°.
In traffic or when the engine is turned off after a hot run the plenum temperatures will increase to match those of the rest of the manifold. As soon as you get some air flowing through it again (ie the throttle is open more than 10% for a period of time) the temperature will drop.
As a very rough rule of thumb for every 1°C of temperature engine power will increase by 0.2%

Matt

[spend]

350Matt said:

Chaps

The isolator is 2mm thick and should reduce the running temperature of the plenum by 10-15°.
In traffic or when the engine is turned off after a hot run the plenum temperatures will increase to match those of the rest of the manifold. As soon as you get some air flowing through it again (ie the throttle is open more than 10% for a period of time) the temperature will drop.
As a very rough rule of thumb for every 1°C of temperature engine power will increase by 0.2%

Matt

The 1°C ~ 0.2% is presumably the temp of the air at the inlet valve?

With the Magna Parva only insulating the plenum & base, wouldn't you get better overall results by using an insulation coating on the inlet manifold as well (since this is presumably the hotter component)?

Dave

[350Matt]

well yes

But the plate is easier to fit, than removing the entire manifold for coating.

Make sure that the coating you apply doesn't flake off over time and get eaten by the engine as well.

If you really keen I'd suggest remove the manifold and plane off 2mm of each mating face to the head and then make up a pair of isolators to keep them picking up heat from the heads.
And then fit a remote thermostat to bypass the water flow through the front of the manifold.


Or make and entire new manifold out of plastic...

Matt

[spend]

350Matt said:

And then fit a remote thermostat to bypass the water flow through the front of the manifold.

That area is a tad complicated - hence the idea of coating?

Dave

[GreenV8S]

My beer mat calculations suggested that 1 C temperature drop corresponded to the equivalent of about 1 bhp worth of increased air density. There may be other small gains from the reduced tendency to knock, if the ignition is optimised to match.