Thermal spacers

[petrolhead]

Hey guys i am after a thermal intake spacer for my bigport redtop. I have seen the ones on trademe but they want $120 for those, so im trying to find a cheaper option. If i can't find anything i will look at pricing them up to make i guess.

[matt dunn]

Hey guys i am after a thermal intake spacer for my bigport redtop. I have seen the ones on trademe but they want $120 for those, so im trying to find a cheaper option. If i can't find anything i will look at pricing them up to make i guess.

PM ENTICE, and tell him I sent you, he may do a deal.
profile.php?mode=viewprofile&u=5765

[frost]

we just cut them out from big sheets of plastic, same stuff they make carb spacers/port matching plates from. can get them in different thickness and quality's.
just go to your local plastics shop and tell them it has to be heat and petroleum resistant. then use your gasket to and band saw to cut one out.

[allencr]

I'd go for an oversize aluminum plate or sheet, so it's like cooling fins that will dissipate heat.
Plastic only slows it down a bit, there isn't THAT much difference between open & closed plastic & glass stuff loosing heat when put in the fridge.

[MAGN1T]

They're rubbish and don't work anyway.

Steve

[ChaosAD]

Yea, if you still have the cooling system hoses connected to the t/b or you get a lot of heat soak.

Aluminium? yea thats a really good insulator

[levinguy]

i'm sure i've seen this style of gaskets used in factory scenarios. im sure there was one on a blacktop 3sge beams engine i had, a plastic spacer/gaket between the head and intake manifold, was about 4-5 mm thick if i can remember correctly. ?

[CelicaGT8]

yea some do have a plastic type one standard

[ChaosAD]

same with the 20v 4age's

[RS13]

They're rubbish and don't work anyway.

Steve

I don't know, guys seem to get quite noticeable results?

http://www.s2000.org/mods/insulator/

Supposedly they're not that bad at all.

[atmosports]

Do they work, yes generally they do but better on some motors than other's. Just the other day I fitted one to a carb'd engine & it picked up a bit, strangely enough it went even better again with two of them on, didn't have 3 to try although I think with 3 it would have gone back again. It pays to make sure when you fit them the manifold isn't tight on the studs/bolts & that you have an insulating washer underneath the heads of the bolts/nuts to prevent heat transfer through the studs/bolts.

[Crampy]

http://autospeed.com/cms/A_110474/article.html

[petrolhead]

haha yes i was going to refer to autospeed article after seeing MAGNIT's opinion but you beat me to it.

[JustinSpiderholden]

They're rubbish and don't work anyway.

Steve

Really why?

Show real life examples with hard evidence please to please back up your comments

Else $&#$% off

[allencr]

SU's on Jag's & Austin Healey's had multiple spacers of 1/4in thick asbestos like stuff.
They work, but most of the advertising is BS.

[pc]

I'd been interested in some for a bigport if available. I've seen enough data to show that they definitely reduce the inlet manifold temps.

My only concern would be that a giant heat sink is being removed from one side of the head... which is probably not going to be an issue, but may make things hotter in places that don't want to get any hotter?

[Crampy]

http://www.hondata.com/heatshieldgasket.html#Details

[MAGN1T]

They're rubbish and don't work anyway.

Steve

Really why?

Show real life examples with hard evidence please to please back up your comments

Else $&#$% off

More to the point , proove that it DOES work.
The theory for carbys is different because you want to keep the fuel cooler to prevent difficult hot starts.
For the average turbo car, the heat in the intake manifold comes from the hot compressed air from the turbos (less than 100% intercooler efficiency).When you're ON boost the intake manifold temp goes up. When you're OFF boost , the intake manifold is cooler.
Reducing any heat soak TO the manifold from the head will make it hotter elsewhere, also the spacer will need port matching very carefully or else instead of only one place to upset airflow due to mismatch, there's 2.
I've had a pair of them on my own car, put them on in 2002, they're in the shed now on a shelf. Rubbish.

Steve

[pc]

More to the point , proove that it DOES work.
The theory for carbys is different because you want to keep the fuel cooler to prevent difficult hot starts.
For the average turbo car, the heat in the intake manifold comes from the hot compressed air from the turbos (less than 100% intercooler efficiency).When you're ON boost the intake manifold temp goes up. When you're OFF boost , the intake manifold is cooler.
Reducing any heat soak TO the manifold from the head will make it hotter elsewhere, also the spacer will need port matching very carefully or else instead of only one place to upset airflow due to mismatch, there's 2.
I've had a pair of them on my own car, put them on in 2002, they're in the shed now on a shelf. Rubbish.
Steve

So you think you had a bad experience once & therefore all are rubbish. You haven't said anything useful but reiterate your earlier drivel.
Some people want to see results from real testing, not another baseless opinion. There is plenty enough of that available on the internet already.

Bigport redtops are not turbo.

[Mr Revhead]

Hmmmmm so what about all the cars that have them as stock?
Silly manufactorers always being wrong