DIY manifold porting - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

SV6GUY · 01-20-2014, 10:30 PM

Hey there,

Annoyingly we don't have an experienced porting service in Oz for the LLT, was wondering if anyone has gone with a DIY approach. Any sort of feedback or advice will be greatly appreciated.

Jason@JacFab · 01-20-2014, 11:46 PM

What? Like Australia? Isn't that MACE country?

lscamaro · 01-20-2014, 11:51 PM

Yes but the MACE porting gets done in the US

Sikoriko · 01-21-2014, 08:14 AM

Porting the inlet plenum not very hard to do, just time consuming and finding the right filler to smooth out. I matched the six intake ports only with the isolator spacer and got great results.

SV6GUY · 01-21-2014, 04:52 PM

MACE in Australia doesn't provide a porting service...yet

Thanks Sikoriko, anyone else?

SV6GUY · 05-09-2014, 12:50 AM

excuse the bump, but can anyone suggest how to fill in the dip at the manifolds mouth?

mhog · 05-09-2014, 03:00 PM

This is how I did it:
Buy this size box of JB weld (http://www.ebay.co.uk/itm/JB-WELD-IN...-/250858214345)
After you clean and dry your manifold you will have to prop the front up on something about 10 inches of so to keep the putty level when you put in into the sump or chin of the manifold.
Mix the JB weld putty.
Use a paint mixer to scoop the putty into the sump of your manifold. If you get the industrial size you will use all of it. You kind of want to use more than necessary. You are going to have to trim some off anyway and you want it to be one pour. One pour because you don't want any separations in the putty. In other words don't let the putty sit too long before you get all of it in. That will cause it to crack and break off after some time.
Let it sit to dry overnight then have fun cleaning up.

Sikoriko · 05-09-2014, 03:23 PM

Take it to a weld shop and have them fill it in with filler rod. Don't trust that jb material. Hey its your valves

Ventmaster · 05-09-2014, 04:34 PM

Since it's aluminum, welding may be cost prohibitive.

If the IM is not brand new, it may have oil residue even after thorough cleaning.

Tracy (Rx Performance) claimed the aluminum was porous and he soaked the "dip" overnight with brake fluid as a solvent to eliminate all the oil.

I dunno, I'm just passing it on. But if someone starting skipping this step to save time, it might explain our recent number of failures on professionally ported IM's.

Jason@JacFab · 05-09-2014, 04:40 PM

I'd be afraid of warping it if it was to be welded... That's a pretty big dip to fill up welding... I've got a metal forge on the way, so I can just pour molten aluminum into the areas that need to be filled.

Sikoriko · 05-10-2014, 02:24 PM

Acid clean or cut the thing off and weld a plate. That is a good chunk of metal it you continuious weld (filler) yesit will wrap

mhog · 05-10-2014, 04:41 PM

I have had the JB weld material one my manifold for about 2 years now. I had my manifold off last week and the JB weld was still intact. I think as long as it is one solid piece it will be ok. If the whole thing breaks loose it would be too big to cause any major problems.

911medic · 05-11-2014, 08:36 AM

Could you drill a few pilot holes in the dip and run a few screws into it before the pour, like RacnJsn95 has done on the LFX manifold? That would give the epoxy something more to wrap around and cling to.

SV6GUY · 05-13-2014, 12:45 AM

that brake fluid idea sounds great. I thought I might put a horizontal bolt through the 'reservoir' like 911medic suggested but i'm a bit worried what material i should use to fill the dip, need a reliable resin.

01-20-2014, 10:30 PM	#1
SV6GUY Endlessly Wrenching Drives: VE SV6 S2 manual Join Date: Nov 2013 Location: Australia Posts: 57	DIY manifold porting Hey there, Annoyingly we don't have an experienced porting service in Oz for the LLT, was wondering if anyone has gone with a DIY approach. Any sort of feedback or advice will be greatly appreciated. Last edited by SV6GUY; 01-20-2014 at 11:46 PM.

01-20-2014, 11:51 PM	#3
lscamaro Drives: 2011 CGM Camaro LS A6 Join Date: Jan 2011 Location: San Antonio, Texas Posts: 10,305	Yes but the MACE porting gets done in the US __________________ Click Picture for Build Thread

05-11-2014, 08:36 AM	#13
911medic Drives: 2012 SIM 2LT/1970 Camaro Join Date: Nov 2012 Location: Near Minneapolis, MN Posts: 1,578	Could you drill a few pilot holes in the dip and run a few screws into it before the pour, like RacnJsn95 has done on the LFX manifold? That would give the epoxy something more to wrap around and cling to. __________________ All bleeding stops eventually -- 2012 2LT Auto w/sunroof -- My journal thread Roto-Fab Intake & W/W Relocate Kit -- ADM Race Scoop -- Dynomax VT Axle-Back Exhaust -- Vitesse Throttle Controller RX Catch Can -- Drake Bowtie Delete -- JacFab Radio Face Cover -- LED Fog Lights -- LED Dome/Trunk/Plate Lights -- Gen5DIY Dash ABL -- Diode Dynamics Cupholder Lighting Wishlist: ACS T5 Splitter -- Hood Vent Mod -- Footwell/Door Pull/Homelink Button Lighting

01-20-2014, 11:46 PM	#2
Jason@JacFab Drives: 2016 1LT RS Camaro; 72 Chevelle Join Date: Apr 2008 Location: Central Point, OR Posts: 5,688 View My Garage	What? Like Australia? Isn't that MACE country?

01-21-2014, 08:14 AM	#4
Sikoriko Drives: 2011 V6 IOM Join Date: Jul 2012 Location: San Diego Posts: 1,385 View My Garage	Porting the inlet plenum not very hard to do, just time consuming and finding the right filler to smooth out. I matched the six intake ports only with the isolator spacer and got great results.

01-21-2014, 04:52 PM	#5
SV6GUY Endlessly Wrenching Drives: VE SV6 S2 manual Join Date: Nov 2013 Location: Australia Posts: 57	MACE in Australia doesn't provide a porting service...yet Thanks Sikoriko, anyone else?

05-09-2014, 12:50 AM	#6
SV6GUY Endlessly Wrenching Drives: VE SV6 S2 manual Join Date: Nov 2013 Location: Australia Posts: 57	excuse the bump, but can anyone suggest how to fill in the dip at the manifolds mouth?

05-09-2014, 03:00 PM	#7
mhog Drives: 2010 V6 Camaro 2LT/RS Join Date: May 2011 Location: NC Posts: 447 View My Garage	This is how I did it: Buy this size box of JB weld (http://www.ebay.co.uk/itm/JB-WELD-IN...-/250858214345) After you clean and dry your manifold you will have to prop the front up on something about 10 inches of so to keep the putty level when you put in into the sump or chin of the manifold. Mix the JB weld putty. Use a paint mixer to scoop the putty into the sump of your manifold. If you get the industrial size you will use all of it. You kind of want to use more than necessary. You are going to have to trim some off anyway and you want it to be one pour. One pour because you don't want any separations in the putty. In other words don't let the putty sit too long before you get all of it in. That will cause it to crack and break off after some time. Let it sit to dry overnight then have fun cleaning up.

05-09-2014, 03:23 PM	#8
Sikoriko Drives: 2011 V6 IOM Join Date: Jul 2012 Location: San Diego Posts: 1,385 View My Garage	Take it to a weld shop and have them fill it in with filler rod. Don't trust that jb material. Hey its your valves

05-09-2014, 04:34 PM	#9
Ventmaster Drives: 2017 1SS 6spd Join Date: Jan 2011 Location: Utah Posts: 2,869	Since it's aluminum, welding may be cost prohibitive. If the IM is not brand new, it may have oil residue even after thorough cleaning. Tracy (Rx Performance) claimed the aluminum was porous and he soaked the "dip" overnight with brake fluid as a solvent to eliminate all the oil. I dunno, I'm just passing it on. But if someone starting skipping this step to save time, it might explain our recent number of failures on professionally ported IM's.

05-09-2014, 04:40 PM	#10
Jason@JacFab Drives: 2016 1LT RS Camaro; 72 Chevelle Join Date: Apr 2008 Location: Central Point, OR Posts: 5,688 View My Garage	I'd be afraid of warping it if it was to be welded... That's a pretty big dip to fill up welding... I've got a metal forge on the way, so I can just pour molten aluminum into the areas that need to be filled.

05-10-2014, 02:24 PM	#11
Sikoriko Drives: 2011 V6 IOM Join Date: Jul 2012 Location: San Diego Posts: 1,385 View My Garage	Acid clean or cut the thing off and weld a plate. That is a good chunk of metal it you continuious weld (filler) yesit will wrap

05-10-2014, 04:41 PM	#12
mhog Drives: 2010 V6 Camaro 2LT/RS Join Date: May 2011 Location: NC Posts: 447 View My Garage	I have had the JB weld material one my manifold for about 2 years now. I had my manifold off last week and the JB weld was still intact. I think as long as it is one solid piece it will be ok. If the whole thing breaks loose it would be too big to cause any major problems.

05-13-2014, 12:45 AM	#14
SV6GUY Endlessly Wrenching Drives: VE SV6 S2 manual Join Date: Nov 2013 Location: Australia Posts: 57	that brake fluid idea sounds great. I thought I might put a horizontal bolt through the 'reservoir' like 911medic suggested but i'm a bit worried what material i should use to fill the dip, need a reliable resin.