Which cars have H.O. intake manifold? - Performance Forum

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Which cars have H.O. intake manifold?
Thursday, November 09, 2006 2:01 PM
What are all the models of cars that hold that H.O. engine? I just looking for the H.O. intake manfifold. What years of each model were they in? Thanks!






Re: Which cars have H.O. intake manifold?
Thursday, November 09, 2006 2:18 PM
Hey, I found 11 of them in a graveyard. ...pulling them this weekend. i found them in 90-94 olds calais, cavvies, grand am...all with the 2.3...you can't miss them...they look like headers stuffed on the front of your engine and they relocate the TB down and to the right...the opposite you should move if someone is firing a weapon at you.

G

You might want to check under the "secret cams" sticky, also...they list years for the HO/LO cams, many of which have the 2.3 intake mannies. G

If i wanted a civic i'd have had japanese parents! now figure out how to make this fit!!
Re: Which cars have H.O. intake manifold?
Thursday, November 09, 2006 2:44 PM
The Ho and Lo cast aluminium manifold don't look like an header.

The 87-89 Lo intake look like a V8 header.



Gilles
2.3 Ho

Re: Which cars have H.O. intake manifold?
Thursday, November 09, 2006 2:47 PM
Make sure you check the 8th digit in the VIN... if it's not an "A" then it's not what you want.





Re: Which cars have H.O. intake manifold?
Thursday, November 09, 2006 2:57 PM
John, a few Lo equipped car have the Ho intake manifold.



Gilles
2.3 Ho

Re: Which cars have H.O. intake manifold?
Thursday, November 09, 2006 3:16 PM
mfk is right
Re: Which cars have H.O. intake manifold?
Thursday, November 09, 2006 3:21 PM
What is a fair price for one? and what is a steal?





Re: Which cars have H.O. intake manifold?
Thursday, November 09, 2006 3:28 PM
Junkyard around where I am charge $30 for manifolds.

You figure someone sells you one, add about $10-$15 for shipping or so.

And a few bucks for the work of pulling the thing.
Even though it doesn't take long to pull one.

-M


Remember....syringes go in the RED waste basket.
Re: Which cars have H.O. intake manifold?
Friday, November 10, 2006 5:52 PM
http://www.quad4forums.com/forums/showthread.php?t=1763



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Re: Which cars have H.O. intake manifold?
Friday, November 10, 2006 7:24 PM
If your wanting just the 2.3 intake manifold to put on your 2.4, I would probably go with the LO Manifold. It still flows better than your 2.4 manifold but does not have the bottle neck effect as bad as the HO does. Oh and if your still wanting a list of cars that had the HO Intake Manifold here ya go CLICK , have fun!




In the planning stage for an all American TRD Cavalier.
Re: Which cars have H.O. intake manifold?
Saturday, November 11, 2006 3:36 AM
Z24HO wrote:If your wanting just the 2.3 intake manifold to put on your 2.4, I would probably go with the LO Manifold. It still flows better than your 2.4 manifold but does not have the bottle neck effect as bad as the HO does. Oh and if your still wanting a list of cars that had the HO Intake Manifold here ya go CLICK , have fun!


lol, you must have missed my above post.



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Re: Which cars have H.O. intake manifold?
Saturday, November 11, 2006 10:03 AM
Z24HO wrote:If your wanting just the 2.3 intake manifold to put on your 2.4....... LO Manifold.......It still flows better than your 2.4 manifold but does not have the bottle neck effect as bad as the HO does...


Prove it.......





Re: Which cars have H.O. intake manifold?
Saturday, November 11, 2006 10:05 AM
^^ Sounded kinda rude but wasnt intended that way. I'm just looking for proof to see how you came up with this. Thanks man!





Re: Which cars have H.O. intake manifold?
Saturday, November 11, 2006 11:34 AM
Well, me personally have not proven it but others have, search around a little bit on more info on the HO and LO manifolds. I can't rember what topic it was read it a few months ago. But from what I remember the penelum on the HO is as we all know bigger than the penelum on the LO. Well if you use the 2.4 head with the HO manifold the TB is sucking in more air filling up the penelum before it goes through the runners to the ports on the head. Well, if you look at the 086 head ports and the LD9 head ports the 086 Head ports are a bit bigger and more round than the LD9 head ports which are smaller and a B shape. This would cause the air to not flow as well with the HO because the Manifold is wanting to push the air in to the head faster than the head can take it in causing a bottle neck at the runners. While the LO penelum is smaller (but still bigger than our stock 2.4 intake manifold) than the HO manifold, the penelum is filling up with less air, with the less air trying to be foreced in it will not bottle neck at the runners as much. Nobody that I know of to date has done a dyno run with the stock LD9 intake and TB before the HO intake manifold and TB, but somebody did do it with the LO and got an 11hp increase in the upper RPM range. But did lose a tiny bit of TQ, so in theroy because it has not been tested yet, without the 086 Head and better flowing manifold/header the HO will give you more HP in the Upper RPM range but you will lose more TQ. Just look at Honda's yeah they have 160whp at stock but only 97ft lb of tq to back it up. That is why they suck and we rock because we have the tq to back up the hp. So in theory you would gain more hp in the upper rpm ranges but suffer from the lose of tq and all that hp would be pretty much worthless. Untile you get the 086 head and better flowing exhuast then in theory with all the right parts you could run 210-215whp NA with the 2.3HO parts swapped over to the 2.4 LD9.

Oh, yeah sorry urweak I totaly missed your post, but I must say I loved your revamed writeup of the HO swap it was my bible when I did mine.




In the planning stage for an all American TRD Cavalier.
Re: Which cars have H.O. intake manifold?
Saturday, November 11, 2006 12:41 PM
I remember a long, long time ago... when someone did the first HO manifold swap... and they actually flow-benched the thing... to see what it would really flow, instead of speculating about it.

I recall something along the lines of, the HO manifold flowing a lot more than the 2.4L composite manifold... which was pretty equivalent to the LO Quad 4 manifold... so if you were to go to all of the trouble of mounting it, there was no value in swapping the LO manifold at all. Just stick with stock. But if you wanted it to flow more... then the HO was the only way to go.

I'm curious what actual testing has occurred since then, to suddenly change everyone's opinion on it.





Re: Which cars have H.O. intake manifold?
Saturday, November 11, 2006 1:09 PM
i got my ho manifold and 2.3ho t/b for $15 at a local yard you can contact them at http://www.lemsauto.com/
Thats where i got mine.

They are located in the northwest corner of Iowa.


Re: Which cars have H.O. intake manifold?
Saturday, November 11, 2006 1:31 PM
Like I said I have no proof myself. I'm just going off of what others have posted and what everybody has agreed upon. I myself am using the HO Manifold with the 56mm TB, because I do have plans of putting the 086 Head on my 2.4 block.




In the planning stage for an all American TRD Cavalier.
Re: Which cars have H.O. intake manifold?
Sunday, November 12, 2006 10:07 PM
Z24HO wrote:Like I said I have no proof myself. I'm just going off of what others have posted and what everybody has agreed upon.


I think these ideas came from a thread about 1-2 years ago, where someone claimed to dyno an extra 11whp from swaping on the LO manifold. But after other members and I asked for dyno sheets as proof, the poster stopped posted, and the post eventually died. But people still quoted that gain, even after the poster never showed hard proof. So i think it comes down to misinformation



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Re: Which cars have H.O. intake manifold?
Sunday, November 12, 2006 11:23 PM
Yeah, I think that is the thread i read as well. So I go back on what I said above, the guy never posted a dyno so it is not 100% fact like I beleived it to be. Just another theory...




In the planning stage for an all American TRD Cavalier.
Re: Which cars have H.O. intake manifold?
Sunday, November 12, 2006 11:29 PM
Z24HO wrote:Well, me personally have not proven it but others have, search around a little bit on more info on the HO and LO manifolds. I can't rember what topic it was read it a few months ago. But from what I remember the penelum on the HO is as we all know bigger than the penelum on the LO. Well if you use the 2.4 head with the HO manifold the TB is sucking in more air filling up the penelum before it goes through the runners to the ports on the head. Well, if you look at the 086 head ports and the LD9 head ports the 086 Head ports are a bit bigger and more round than the LD9 head ports which are smaller and a B shape. This would cause the air to not flow as well with the HO because the Manifold is wanting to push the air in to the head faster than the head can take it in causing a bottle neck at the runners. While the LO penelum is smaller (but still bigger than our stock 2.4 intake manifold) than the HO manifold, the penelum is filling up with less air, with the less air trying to be foreced in it will not bottle neck at the runners as much. Nobody that I know of to date has done a dyno run with the stock LD9 intake and TB before the HO intake manifold and TB, but somebody did do it with the LO and got an 11hp increase in the upper RPM range. But did lose a tiny bit of TQ, so in theroy because it has not been tested yet, without the 086 Head and better flowing manifold/header the HO will give you more HP in the Upper RPM range but you will lose more TQ. Just look at Honda's yeah they have 160whp at stock but only 97ft lb of tq to back it up. That is why they suck and we rock because we have the tq to back up the hp. So in theory you would gain more hp in the upper rpm ranges but suffer from the lose of tq and all that hp would be pretty much worthless. Untile you get the 086 head and better flowing exhuast then in theory with all the right parts you could run 210-215whp NA with the 2.3HO parts swapped over to the 2.4 LD9.

Oh, yeah sorry urweak I totaly missed your post, but I must say I loved your revamed writeup of the HO swap it was my bible when I did mine.


This somewhat makes sense....BUT just because you are dumping air into a bigger plenum its not going to increase the distance to the runners. It's not like it has to entirely fill the plenum before it can enter the runners. The more open and less restrictive an intake is, the better. air sitting in the plenum is not going to create a bottle neck. Now if where the plenum connects to the TB flange was smaller on the HO than on the LO that would cause a restiction on the HO but I think its the same in that location on both manifolds.

PS: if anyone has a 56mm TB with cruise and/or a HO manifold PM me or IM me on AIM/AOL @ z2fst4u24





Re: Which cars have H.O. intake manifold?
Tuesday, November 14, 2006 2:24 PM
Agreed, I'm just throwing out my 2 cents just something I read on here in the past and throught I would bring it up. Hope it helped you decide on what you want to do.




In the planning stage for an all American TRD Cavalier.

Re: Which cars have H.O. intake manifold?
Tuesday, November 14, 2006 2:48 PM
For sure man! thank you! I will be going with the same set-up your currently running.





Re: Which cars have H.O. intake manifold?
Tuesday, November 14, 2006 2:52 PM
Glad I don't sound like a complete idiot lol.




In the planning stage for an all American TRD Cavalier.
Re: Which cars have H.O. intake manifold?
Tuesday, November 14, 2006 6:12 PM
how differently does the ho and lo look from each other.

thanks.
Re: Which cars have H.O. intake manifold?
Tuesday, November 14, 2006 6:28 PM
they look the same in design, but the HO has a bigger penlum than the LO here is a guide with the nullpictures of the 2 side by side.




In the planning stage for an all American TRD Cavalier.
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