Jump to content
SAU Community

Recommended Posts

Does anybody have feedback on the mace engineering manifold spacers? They are made from insulating material so may keep temp down too.. If you are searching for performance I dont think you will feel a difference after switching to the plazmaman (I didn't) but don't regret it because of the difference it makes in the engine bay. I can't comment on the greddy, but even spaced I don't think it would either

Does anybody have feedback on the mace engineering manifold spacers? They are made from insulating material so may keep temp down too.. If you are searching for performance I dont think you will feel a difference after switching to the plazmaman (I didn't) but don't regret it because of the difference it makes in the engine bay. I can't comment on the greddy, but even spaced I don't think it would either

That would be good to know if anyone has used the mace engineering ones, I'm interested cause u can use those spacers with any plenum u decide to run as long as it's not that thick I don't think u would need to modify anything.

I gather u went from stock to plazmaman & didn't feel any gains..... Ive currently got the greddy & that's what started this whole thread, would it make much of a difference midrange torque/lag wise to run a spacer & would it pose any problems..... I know some guys have done it unfortunately none of them have commented (maybe they haven't read this or no longer active members).

I love the look for the greddy but now I am willing to switch to less pretty (in my opinion) plazmaman if there is noticable midrange gains to be had & so far that seems to be a resounding yes from everyone.

I had an r33 rb25 (rest well my faithful motor u will be back one day) but for now I'm buying a 25neo & not sure wether to do just Pistons & headgasket (maybe oil pump as I have billet gears sitting here) & put that back in (trying to keep costs down)!! Of course also doing the plazmaman plenum change over from the greddy & I'll see what the results look like I know it's not exactly a great comparison but it's better than nothing

I was very lucky to get a plazmaman plenum, TB, piping & bov at a very good price for my neo. I also have a 6boost mani ready - just need a turbo. Cant go wrong with plazmaman I reckon.

From memory 10-12 before you hit the fuse box.

I'm guessing that would be in a R34? That wouldn't make bugger all difference to the midrange. In a R33 you might have a bit more room but I think even at best 40mm wouldn't make much of a difference From what my mechanic says.

Seems like the plazmaman plenum is the best option out of the forward facing plenums! I need a bargain like Mrfijigold seems to have landed!

I might be selling my hks 3037s but we'll see ?

After I fit my Neo if I end up using the same turbo then I'll post my old dyno run vs my new. I know it's not a fair comparison but it's something. My old setup was an R33 rb25 with a greddy plenum my new setup (If i don't change turbos) will be a Neo with a plazmaman...... I'll post updates as they happen in the mean time anymore input on the original topics is appreciated ?

  • Like 1

I suppose a way of estimating gains based on runner length would be to look at cars or motorbikes which have variable length runners. Then you could tell If 6 mm or so is worthwhile. Im.guessing it's not, in order to get a decent gain it would be in the order of 100 mm

Looking forward to seeing how would go with the neo.

100mm is the correct order of magnitude to make noticeable changes. When adding trumpets onto ITBs or sidedraught carbies, you're talking about 50-150mm trumpets, and not being able to buttdyno tell the difference between say, 50 and 75mm. The real dyno might show you some numerical difference, and the car might be measurably faster/slower as a result, but the butt really couldn't tell.

Unfortunately our engine bays don't accomodate 100mm ? so it looks like the spacer idea for midrange is not a good thing to consider!

I'm thinking a thin spacer from mace engineering for heat soak purposes with a plazmaman plenum is a win win ?

Thinking I'll paint my plazmaman plenum same colour as my cam covers but I'm wondering wether I should paint the factory runners also or just have them cleaned up.......?

I am about to remove my plazmaman anyway and considering installing a mace spacer, but is it possible it might make the runners 'too long' and have some negative implications? Or did you decide an extra 6mm even on the standard runners wouldn't be enough for the 'bum dyno'

I am about to remove my plazmaman anyway and considering installing a mace spacer, but is it possible it might make the runners 'too long' and have some negative implications? Or did you decide an extra 6mm even on the standard runners wouldn't be enough for the 'bum dyno'

6mm wouldn't make any difference in a bad or good way really it's too small to change the characteristic of an engine but the heat soak benefits would be worth while I would think.... ? definitely let us know how u go!

All those style of plenums aren't the best for midrange torque or for better spool that's why I'm making the swap from greddy to plazmaman.... It's the design in the short runners that makes them like that.

if it's made for r33 rb25 it would fit on a neo without too much hassle! ??

  • Like 1
  • 2 weeks later...

And I'm hoping somebody can comment on any intake temp changes using the mace insulating spacer

I think you & me need a megaphone or something lol! Definitely people out there who've done these mods probably just haven't been on in a while or not reading this topic...... Hhhhmmmmm *scratches non existent beard*

And I'm hoping somebody can comment on any intake temp changes using the mace insulating spacer

I use a phenolic intake gasket on the inlet manfold for my RB25DET. My inlet plenum uses the standard lower runners with a MX Performance plenum top (similar to a Plazmaman manifold).

I don't beleive the intake temp changes would be very significant, as the coolant runs through the inlet manifold. This will heat up the inlet manifold to what ever temperature the coolant is at. Conversly if you were running a standard gasket, the plenum may be a touch warmer, but the coolant will then do the opposite and try to bring the temperature of the inlet manifold down to the level of the coolant. So there's probably only a few degrees in it either way.

I would have preferred to use a phenolic gasket between the lower runners and the plenum top (provided it could seal correctly) however I wasn't able to find anyone who makes them.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Seat of the pants assessment of the new intake: The car is way less "doughy" when hitting the loud pedal, especially off idle when stopped or in traffic, I did use a cheapo lazer thermal thingo to measure the temp around where the pod filter got its air, it was between 55 - 60°C, in saying this the car was shut off and not moving, so the OEM intake pipe was not supplying any fresh air to where the pod was when the car was at least moving A weird bonus was induction noise on the throttle in the cabin increased a bit,  I was worried that I was actually going to lose some of that induction noise I love so much, outside though, when I got the daughter to do a WOT drive by pass for me, the induction noise has increased alot when on the throttle, not quite ITB doort, but well up there I'm extremely happy with the results and have been exploring the country roads in the region  As for house mods: 1.New front fence is up and is awesome, it really upgraded how the joint looks from the street, and the added security is nice 2. Electricians have replace some interior lights, and with more lighting in the garage, a few new motion detecting lights out the front above the garage, front room, and at the front door, which I have already found heaps helpful coming and going, also now has fancy pants CCTV all round the house The only hold point for power though is the solar and batteries due to supply issues, although this will happen over the next few weeks 3. I have done a heap of landscaping out the front and I'm almost ready to do a new small retaining wall with some nice blocks to replace the brick and cemented in rocks around the raised garden beds cemented in river stone "was the fashion at the time" the house was built. I currently have a pallet of retaining wall blocks and 2 bulka bags of 20mm blue metal to replace the wood chip that is in the raised garden beds around the house 4. I now have 3 big raised garden beds for out the back to grow some vegetables, about 70cm high, 200cm long and 100cm wide 5. My 2 compost bins are already pretty full with brown, green and kitchen waste from the landscaping I'vedone so far, but they will probably take a few months to break down, so anything else that gets chopped, trimmed, and kitchen waste will just start filling the base of the raised garden beds to about 30cm before I start throwing 40cm of good compost, and stuff, for the vegetables to grow in, I'll need a few ton of compost and soil, but the local supplier can sent me bulka bags of the stuff Basically the logs, wood chips and a few strategically placed rocks for drainage, will give the beds some good organic materials down low to break down over time, and they will hold moisture during the warmer months to save the water in my big arse water tank if we don't get alot of rain So, all in all, the car and house mods are going well, and I'm really enjoying being retired, I sleep in too 0700 and slowly plod around inside until I feel like actually doing anything, and only work in the yard for as long as want, which has actually been alot over the last few weeks,  although when you look at it, it seems that not a huge amount of work has been done,  until I look at the before I started the work pics Happy days and good times indeed 
    • hahaha yeah. Plan is to get side skirts and probably just rear pods. But going to do them one-by-one. I've got a set that I really like from RHDJapen, but that one isn't shipped to AU. So need to find someone who can get it for me
    • Here's an idea, answer the questions I asked you as they are trying to work out WHY the LSD will be binding up in a straight line.
    • You haven't driven many modern cars then have you? Most of them have sfa steering feel with their stupid electric bullshit steering systems.
×
×
  • Create New...