Thermal spacers

[steve murch]

There's a couple that show otherwise.

Maybe mr crunchy can find something to back up his own statement
Likewise true independant tests for thermal spacers.

The way I read the owner of the test car, under WORST conditions there is no gain - but overall it was worthwhile. That test also applies if you have an E90 Bimmer in the first place haha.

Every bit seems to help, while I haven't seen a specific back to back test it seems to stand out that at least in the Honda world where people have done a lot of this kind of thing - the stand out results virtually always seem to be where people have been thorough about doing the Phenolic spacer, wrapping header, intake/airfilter setup etc etc. One of my mates got his DA6 running a stock B16A1 up to over 120kw (101kw stock figure on the dyno used for progress) pulling all stops on all those little tweaks and tricks.

Maybe one thing by itself isn't going to make a difference, but if you want the edge over someone who isn't going to be as thorough you may as well do all the bits and pieces and enjoy the benefits of cumulative gains.

thank god someone has enough intelligence to know how things work in this world, and didnt have to bag someone in the process

[rollaholic]

http://www.b15sentra.net/forums/showthread.php?t=161861

Didn't even have to look very hard?

Steve

i skim read the first couple of pages of that thread, sounded to me like they were talking about aluminium spacers - a rather handy conductor of heat last i checked. i gathered the intention of that mod was to change the length of the inlet runners, rather than try and slow down heat soak.

[DexGT]

http://www.b15sentra.net/forums/showthread.php?t=161861

Didn't even look very hard

Steve

i skim read the first couple of pages of that thread, sounded to me like they were talking about aluminium spacers - a rather handy conductor of heat last i checked. i gathered the intention of that mod was to change the length of the inlet runners, rather than try and slow down heat soak.

I too had a read and they are adding an 3/8" ALUMINIUM spacer to see if it changes the torque curve of the engine , I too discovered this on the 1st page

[jondee86]

Some people read too much and think too little Thermal spacers
are specifically about reducing the rate of heat transfer from head to
manifold. Carb/throttle body spacers are about changing the volume or
length of the inlet tract. Typically they will be much thicker than thermal
spacers, and made of different materials.

Clearly, anyone who thinks it is possible to make a thermal spacer
(aka thermal insulator) out of aluminium, is.... confused !!

But, hey... what about a 25mm thick phenolic gasket...

Cheers... jondee86

[Dell'Orto]

Imagine how much extra torque you'd make with a 25mm gasket

[mr.sky]

I rarely post here. But I feel I have something to add, so I will. I did a before and after test on my B18C (its a Honda engine ) while installing a hondata heatshield gasket. The results taken from my S300 datalogger couldn't have been clearer.

Driving under load saw 4-5 degrees reduction in IAT across the board, while sitting at idle for a measured period of time (as you would do at the drags) yielded lower temps of between 8 and 12 degrees over the same period of time with the regular paper gasket. Ambient air temps were the same throughout.

So in short (shock horror) the gasket reduces the heat transfer between the head and the intake manifold

/thread