DIY V6 Mace ported IM/25mm spacer/porting heads install

[SC2150]

Very nice work!! Looksgreat.

[Sleez]

thank you.

[Mach]

Nice work.. Love that painted/polished combo!!!

[Sleez]

thanks Mach,

today i match ported the spacers. takes about 30 min/port, took me 3 hrs incl pictures and a couple quick breaks.

first of all, safety gear!!! i went a little overboard, i am sure a dust mask would be fine, but i had the respirator handy!



and the tool, dremel with 60 grit sanding drums. i used 1 drum per port.



went pretty well, i started on one end, and got the opening close to the line, then slowly worked it to about 1/2 the line, then i flipped the spacer over and did the other end of the port just the same way. i then started leveling between the ends, being careful not to hit the ends anymore. go slowly and check often. the pattern and dust will help you judge when it is close to flat.

first port;



i then checked in a few places with a straight edge, and evened a few spots out, until i was happy with the surface.



after 3 hours or so, all done;



compare the before;


to the after;


hopefully it will have been worth the effort!!!

tomorrow i'll start on the heads!!! wish me luck!!!

[Daily Driver]

Nice work Sleez , cant wait to see the end result.

[Sleez]

thank you.

[camaro2rs]

soo you just used a dremel? and files?

[Sleez]

the file was just a gauge to make sure the sides were straight, only used the Dremel with drum sanding wheels.

[Sleez]

just went out and marked the head ports, there is not a lot of material to worry about.

some of the ports are 50% dead on, and the largest ledge is .065".

don't think the risk to reward is quite worth it. i am not too worried about getting the last HP out of it. maybe if i was planning a FI install.

so, i think i am going to install my IM and spacer as is, no head porting.













the spacers were in more need of porting than the heads.

[camaro2lt]

soo when u ported the 25mm did u put the gasket on first with rtv?

[Sleez]

Originally Posted by camaro2lt

soo when u ported the 25mm did u put the gasket on first with rtv?

no, i just used the bolts to align the gasket so i could mark it, then ported it.

i don't think i am going to use RTV when installing the spacers and IM, since i am using oem gaskets top and bottom. the IM is dry, and not FI so it should be fine.

[kjkjr27]

I wanna polish my IM but idk how to especially when its my DD.

[Sleez]

Originally Posted by kjkjr27

I wanna polish my IM but idk how to especially when its my DD.

if you mean polishing the exterior, it would be pretty time consuming. it is fairly rough cast. you would have to hit it with like 80 grit to take the texture off, then start sanding, it would probably take 16 man hours to get it looking real good.

that's why i decided to paint mine.

i polished some headers on my motorcycle, 14 hrs it took me!! and that was fairly smooth stainless steel to begin with. and for a two cylinder!!

[Sleez]

ok, got the IM and spacers installed today!!! woo frikkin' hoo!!!!

made a couple brackets yesterday for the rear horiz bolts. i found some "T" brackets at the hw store that had hole spacing close to 1".



i drilled the holes out to fit the bolts.



then cut the un-needed part off, and deburred with the dremel.



sprayed with some hi-temp black i had laying around.



and installed with some SS hw.



make sure to check the spacing between the holes before tightening everything down.



since i am using oem gaskets above and below the spacers without using RTV, i laid the bottom gasket down, then set the spacers on top.

i did put a small amount of silicone lube (Super Lube) on all the rubber surfaces to keep them from tearing as i tightened down the bolts.



more to come.....gotta run to town.