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Camaro V6 LFX Engine, Exhaust, and Bolt-Ons For all LFX related parts

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Old 07-16-2013, 02:54 AM   #1
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LFX intake spacer (aka isolator, aka The Extendolator) now in testing.

For the latest testing and discussion jump to post #332


-----------------------------
Old info, and development progress starts here

It's been a long time coming, and I'm not really sure why no one has done it so I decided to go for it. Looking beyond the fact that the LFX doesn't "really" need an intake isolator for heat soak issues, it's no secret that runner length is proportionate to the power band. IE: A longer runner should create more low end torque...

While the upper portion of the LFX manifold isn't prone to heat soak as the 2010-2011 aluminum intake manifold is, many of you don't know that the LFX has a LOWER intake portion that IS also made of aluminum.



While it probably doesn't have a huge impact on air temp since it's such a small area of the intake manifold, it certainly can't hurt to get it off of the engine. It's appx. 1.125" thick. I took the LFX intake manifold off of my new-ish 2013 LFX car after driving about 10 miles, and the ambient temp was also close to 100 deg f, and that section was burning hot.

Anyway, I made a 1" (~25mm) thick intake spacer I've tentatively named The Extendolator out of a similar material that some of the similar products that are made for the LLT engine some of you may be familiar with. It was installed yesterday utilizing 2 OE intake manifold gaskets, and longer bolts.

I have not confirmed yet, but I think the LFX intake may be taller than the LLT manifold. I do not believe that the factory engine cover will fit under the hood using this 1" piece, but I have not tried it yet. I am also looking into 1/2" thick Extendolators.

The Extendolator came about as it was kind of a by product of something else I am working on called The Adaptolator (The Adaptolator thread in the LLT section)... Which leads me to testing... I am waiting on a new LLT intake manifold I ordered to show up at the dealer, and to sort out the final details on making it work on the LFX car (vacuum routing, etc), but since I only have an LFX car at my disposal, once The Adaptolator stuff is sorted out, I plan to dyno test:

1) The LFX manifold w/ the Extendolator (intake spacer (isolator))
2) The LFX manifold as stock (w/o the spacer)
3) A stock LLT manifold on the LFX car via The Adaptolator

And some time down the road, depending on how close the LFX manifold and the LLT manifold are, I may test a ported LLT manifold on the LFX engine via The Adaptolator.







That said, I'll hit the dyno myself as soon as I get everything else ready to test the same day. I also plan to hit the drag strip the next time I have the opportunity.

I have ordered enough material to make enough Extendolators for 10 cars. 5 each of the 1" thick, and 5 each of the 1/2" thick...

I've got 2 people lined out to test the 1" spacer, and 2 to test out the .5" spacer that will be dynoing before and afters. Products to ship out mid to late next week. My own dyno testing is appx. 3 weeks out, but I may try to hit the drag strip again before that.
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Old 07-16-2013, 07:16 AM   #2
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You should be able to use the Pontiac G8 oil filler extension to raise the height if the oil fill tube for proper fit of the cover with the 1" spacer - PN 92068813.

The post on the passenger-side needs to be raised as well.
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Old 07-16-2013, 08:50 AM   #3
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Old 07-16-2013, 10:01 AM   #4
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For convertibles the strut tower brace will probably come into play.

By the way how clean are your valves?
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Old 07-16-2013, 10:45 AM   #5
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Very interesting to see - PM sent. Wish this was just one month ago when my site had a dyno day that I had my 5th gen at, but if you're sending for free then the $50-$75 to get back on the dyno for a before and after run would be worth it.
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Old 07-16-2013, 12:02 PM   #6
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Old 07-16-2013, 12:19 PM   #7
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PM sent, :-)
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Old 07-16-2013, 01:46 PM   #8
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pm sent here also!!
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Old 07-16-2013, 01:55 PM   #9
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Quote:
Originally Posted by pgustavson View Post
You should be able to use the Pontiac G8 oil filler extension to raise the height if the oil fill tube for proper fit of the cover with the 1" spacer - PN 92068813.

The post on the passenger-side needs to be raised as well.
I am not 100% certain yet, as I'm waiting for my LLT intake manifold on order to show up, but I believe that the LFX intake manifold setup is taller than the LLT. It does not appear that there is room for the engine cover under the hood with the 1" spacer, but I have not tried to put it on yet either as I run without it. I will investigate when the rest of the parts show up.

Quote:
Originally Posted by intensifi View Post
For convertibles the strut tower brace will probably come into play.

By the way how clean are your valves?


Picture of the intake valves on the #1 cylinder after a little over 1500 miles without a catch can. Looks like there is already some build up on the valve stem.

I think I have my tester for the 1" piece already, if I have not replied to your PM yet, please don't feel bad. A lot of people have expressed interest in testing the 1", but none for the .5", still need someone to test that out.
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Old 07-16-2013, 02:24 PM   #10
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I'll test out whatever is available - if it's only the .5" that's available I'll give it a shot. For free - who can complain?
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Old 07-16-2013, 02:39 PM   #11
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BTW do you see any benefit in porting the aluminum piece on the bottom of the manifold you are trying to heat isolate?
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Old 07-16-2013, 02:49 PM   #12
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Old 07-16-2013, 07:06 PM   #13
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Quote:
Originally Posted by intensifi View Post
BTW do you see any benefit in porting the aluminum piece on the bottom of the manifold you are trying to heat isolate?
I don't see why you wouldn't benefit from gasket matching the lower intake manifold piece, as well as the intake ports on the heads also...

As the part is currently designed, they are matched to the gasket port size, which is considerably bigger than the port in the head and the bottom of the intake. I have to redraw the spacers to match the port size so there is no abrupt edge to disrupt air flow before sending them out. But since the gasket matched piece is already designed, and therefore easy to cut I will have both "sizes" available, one to fit the stock port sizes, and the gasket matched... Of course a guy could always hog out the stock port sized spacer later down the road, but it's nice to have the option if a person planned on port matching before ordering the part so it could fit.
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Old 07-16-2013, 09:29 PM   #14
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Old 07-18-2013, 01:16 PM   #15
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While it probably doesn't have a huge impact on air temp since it's such a small area of the intake manifold, it certainly can't hurt to get it off of the engine.

I have a question about this. Having moved from a 2011 LLT to a 2013 LFX, It seems the engine compartment is way hotter and for longer on the LFX. Anyone know if this is true, and by how much? And if it is true, wouldn't that drive up the temp of the lower IM?
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Old 07-19-2013, 07:46 PM   #16
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Quote:
Originally Posted by NYJets77 View Post
While it probably doesn't have a huge impact on air temp since it's such a small area of the intake manifold, it certainly can't hurt to get it off of the engine.

I have a question about this. Having moved from a 2011 LLT to a 2013 LFX, It seems the engine compartment is way hotter and for longer on the LFX. Anyone know if this is true, and by how much? And if it is true, wouldn't that drive up the temp of the lower IM?
I really can't say myself as I haven't had the chance to play with a 2010-11 LLT car... If it is true, I would doubt that the ambient air in the engine compartment would have a big effect on the lower portion of the intake as it's sitting on the engine and the engine is probably way hotter than the air (that's hopefully circulating from movement) around it.

I have scheduled dyno time for the 3rd, I will be testing the stock LFX manifold by itself, the LFX manifold w/ a 1" Extendolator, and If you haven't been following the Adaptolator thread in the LLT section, I have successfully mounted and am currently running an LLT intake manifold on the LFX engine via The Adaptolator. I will also by dyno testing that.

Also, if you guys REALLY wanted, I could make a 2nd piece (optional) to the Extendolator that would replace the aluminum lower intake manifold piece of the LFX intake setup.
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Old 07-24-2013, 02:14 PM   #17
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I would imagine that it will be pretty close to this?

http://www.maceengineering.com.au/ep...Products/MI628
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Old 07-24-2013, 02:30 PM   #18
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Quote:
Originally Posted by jbrantner24 View Post
I would imagine that it will be pretty close to this?

http://www.maceengineering.com.au/ep...Products/MI628
Huh, that's new... Yup, the 1/2" ones are probably very similar to that... A little more than I was planning to charge. Oh well...

I got the batch of 1/2" ones cut yesterday, I made a few changes. Made the port holes matched to the Ports, rather than the gasket. They also have provisions to actually fit the gaskets, so you won't have to cut the alignment cones, or sand the nubs off the bottom of the gaskets if you wish to use 2 gaskets for the install. Pics later today.
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Old 07-24-2013, 06:41 PM   #19
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Originally Posted by jbrantner24 View Post
I would imagine that it will be pretty close to this?

http://www.maceengineering.com.au/ep...Products/MI628
Wow that is new.

I can't believe that MACE isn't on here promoting them....they are still a vendor aren't they?

If I had an LFX, I'd be all over it....assuming it works successfully like the LLT version does.
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Old 07-24-2013, 06:44 PM   #20
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Got this thought after my last post, but I hope someone on here has a stock or very near stock LFX dyno, and then does intake, cats, exhaust, ported LFX intake, and insulator on their car with a CUSTOM tune (like from FSP).

I'm thinking it would beat a fully bolted on LLT with headers and that would be awesome. 360 - 370 HP LFX perhaps?
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Old 07-24-2013, 06:49 PM   #21
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Old 07-24-2013, 07:37 PM   #22
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A little more than I was planning to charge. Oh well...
Are their prices in Australian dollars?
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Old 07-24-2013, 08:07 PM   #23
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Are their prices in Australian dollars?
Hope that's a mistake because it does have a $ sign and last I check that means US currency. If it's right and they are 150 thats a little steep
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Old 07-24-2013, 08:24 PM   #24
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Hope that's a mistake because it does have a $ sign and last I check that means US currency. If it's right and they are 150 thats a little steep
That's about the going rate for these... The Vmax LLT ICEolator is $150, and it's only 3/8" thick. At least on the LLT these "isolators" show quite a nice gain for the money, no one has any "proven" numbers yet for the LFX that I can find, only speculation.

Quote:
Originally Posted by KMPrenger View Post
Wow that is new.

I can't believe that MACE isn't on here promoting them....they are still a vendor aren't they?

If I had an LFX, I'd be all over it....assuming it works successfully like the LLT version does.
It appears that they are not a current vendor of Camaro5... Upon digging a little deeper it seems they have listed both the isolator "to suit" the VE Commodore LLT, and the Camaro LLT separately... Not sure why, none of my business really... I would assume it is the same part? Perhaps they don't have one "to suit" the Camaro LFX yet??

Quote:
Originally Posted by KMPrenger View Post
Got this thought after my last post, but I hope someone on here has a stock or very near stock LFX dyno, and then does intake, cats, exhaust, ported LFX intake, and insulator on their car with a CUSTOM tune (like from FSP).

I'm thinking it would beat a fully bolted on LLT with headers and that would be awesome. 360 - 370 HP LFX perhaps?
Would be nice if someone did... Personally, I'll go as far as I can without a tune before it's absolutely necessary. I will have the bone-stock dyno on the 3rd, along with the others I've mentioned... In the near future, I'll basically everything but a tune, as long as it appears to stay on the safe side, but as of yet, I have not installed my wide band on the car, but I will before I think I'm getting too crazy.
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Old 07-24-2013, 10:00 PM   #25
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Just a quick question, have you gotten back to the PMs yet? Have you already found enough volunteers?
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