LSJ+Vulcan I/M=FAIL
my buddies mani looked just as bad man, vac ports were on the wrong side TB opening was too small and powdercoat was crap. he sent it back and they made another one. got it back again, still garbage... not enough vac ports this time, tb opening still isnt big enough and some burrs on the inside aswell looks like it wasnt even cleaned before powdercoating. hes dont wanna pay his money again to ship the damn thing back and wait another month for them to make a new one. for the money he spend with vulcan he should get what he asked for no doubt.
Thread Starter
Joined: 06-08-06
Posts: 15,725
Likes: 410
From: Fort Worth, TX
Yeah... that's another kick in the nuts. The TB Bolts will start to thread... and then they just stop threading. I'm guessing they were made with the wrong pitch. We'll just tap it.
BUT... the real problem is that the alignment of the TB is off, I'm guessing. The actual collector wall is behind two of the bolt holes... meaning that the TB Bolts can only go so far before they hit that wall. Anybody have a TB Spacer for cheap? Dirt Cheap?
Vulcan, here's what I'm going to do. I'm going to get this thing on my car and running. So that I have a car for the next 2-3 weeks. After that, I'm shipping out to Camp Lejuene and I won't need a car. I'll then have my friend take off the manifold and ship it back so that anything and everything wrong can be fixed. So I'll just leave the TB opening as it is now... which isn't pretty. Fair warning...
BUT... the real problem is that the alignment of the TB is off, I'm guessing. The actual collector wall is behind two of the bolt holes... meaning that the TB Bolts can only go so far before they hit that wall. Anybody have a TB Spacer for cheap? Dirt Cheap?
Vulcan, here's what I'm going to do. I'm going to get this thing on my car and running. So that I have a car for the next 2-3 weeks. After that, I'm shipping out to Camp Lejuene and I won't need a car. I'll then have my friend take off the manifold and ship it back so that anything and everything wrong can be fixed. So I'll just leave the TB opening as it is now... which isn't pretty. Fair warning...
i have to admit, i did have one thing wrong with my hahn manifold... the flange for the tb was turned 90before welding, making the tb sideways... i had to get a spacer to make it work... (hahn said i was only one)
hahn is willing to fix at there shipping charges, im just waiting till i do my cnc head and have some down time then send it in... they said i can send it back anytime... 1mon, 1yr, or 10yrs later...
hahn tech support is above all i have ever dealt with
hahn is willing to fix at there shipping charges, im just waiting till i do my cnc head and have some down time then send it in... they said i can send it back anytime... 1mon, 1yr, or 10yrs later...
hahn tech support is above all i have ever dealt with
Yeah... that's another kick in the nuts. The TB Bolts will start to thread... and then they just stop threading. I'm guessing they were made with the wrong pitch. We'll just tap it.
BUT... the real problem is that the alignment of the TB is off, I'm guessing. The actual collector wall is behind two of the bolt holes... meaning that the TB Bolts can only go so far before they hit that wall. Anybody have a TB Spacer for cheap? Dirt Cheap?
Vulcan, here's what I'm going to do. I'm going to get this thing on my car and running. So that I have a car for the next 2-3 weeks. After that, I'm shipping out to Camp Lejuene and I won't need a car. I'll then have my friend take off the manifold and ship it back so that anything and everything wrong can be fixed. So I'll just leave the TB opening as it is now... which isn't pretty. Fair warning...
BUT... the real problem is that the alignment of the TB is off, I'm guessing. The actual collector wall is behind two of the bolt holes... meaning that the TB Bolts can only go so far before they hit that wall. Anybody have a TB Spacer for cheap? Dirt Cheap?
Vulcan, here's what I'm going to do. I'm going to get this thing on my car and running. So that I have a car for the next 2-3 weeks. After that, I'm shipping out to Camp Lejuene and I won't need a car. I'll then have my friend take off the manifold and ship it back so that anything and everything wrong can be fixed. So I'll just leave the TB opening as it is now... which isn't pretty. Fair warning...
Thank you
What size bolts are you trying to use with the throttle body? There are two different sizes that have been used, 1/4"-20, and M8x1.25. It will be either one of those. I think yours uses 1/4-20 bolts.
I think a lot of people didnt realize that the throttle body bolts are a different size than factory, which is possibly why some were confused. I just spent about $300 today and all new tooling just for porting, polishing and matching up the runners to the head flange. Im finishing up the first one now with a sanding roll. We'll see how they look!
I think a lot of people didnt realize that the throttle body bolts are a different size than factory, which is possibly why some were confused. I just spent about $300 today and all new tooling just for porting, polishing and matching up the runners to the head flange. Im finishing up the first one now with a sanding roll. We'll see how they look!
he just got it back again a couple days ago... for the 2nd time. hes sitting right next to me and he said he hasnt sopken w you about it. he says hes not paying to send it in again and hes not waiting any longer for work that should have been done right the first time. hes just gonna have someone local fix it. he wanted to have his intercooler piping made by you but hes having second thoughts about it now. fail IMO
Thread Starter
Joined: 06-08-06
Posts: 15,725
Likes: 410
From: Fort Worth, TX
What size bolts are you trying to use with the throttle body? There are two different sizes that have been used, 1/4"-20, and M8x1.25. It will be either one of those. I think yours uses 1/4-20 bolts.
I think a lot of people didnt realize that the throttle body bolts are a different size than factory, which is possibly why some were confused. I just spent about $300 today and all new tooling just for porting, polishing and matching up the runners to the head flange. Im finishing up the first one now with a sanding roll. We'll see how they look!
I think a lot of people didnt realize that the throttle body bolts are a different size than factory, which is possibly why some were confused. I just spent about $300 today and all new tooling just for porting, polishing and matching up the runners to the head flange. Im finishing up the first one now with a sanding roll. We'll see how they look!
Yo dawg (Vulcan)...
You should up your price $85 and include ARP Part Number 400-8012 with every Intake Manifold.
Those are the studs that every Cobalt will need to mount one of your Intake Manifolds. We only need 7 studs... so after you buy 7 kits (they come with 8 studs), you'll have a whole set of 7 extra. Just trying to help you make it easier for your customers to mount your product while putting extra $$$ in your pocket.
Of course... it'd probably be more cost effective to buy the 16 pack, instead of the 8 pack.
The product I'm talking about...
http://store.summitracing.com/partde...5&autoview=sku
The whole product line that I'm talking about...
http://store.summitracing.com/egnsea...5&autoview=sku
Last edited by USMCFieldMP; May 6, 2009 at 12:56 AM. Reason: Automerged Doublepost
Thread Starter
Joined: 06-08-06
Posts: 15,725
Likes: 410
From: Fort Worth, TX
Well, the size of the TB Bolts most certainly isn't M8 x 1.25. Maybe M6x1.25... I will get the GM Bolts measured tomorrow to figure out what I have and try and have the bolt holes sized on your flange.
Another FYI... the way your flange is on there now... the TB will only fit on there upside down (compared to how it sits stock on an LSJ). If you were to include (either fabbed or bought) a TB Spacer, I think that would allow for it to be mounted in the stock LSJ location... eliminating the need to custom make the Vacuum Hose that connects to the TB and eliminate LSJ's from having to cut our TB wires and extend them.
Sooo... anyone know where to get the cheapest TB Spacer? I don't need any ports on it and it have to be big enough for the LS4 TB.
Another FYI... the way your flange is on there now... the TB will only fit on there upside down (compared to how it sits stock on an LSJ). If you were to include (either fabbed or bought) a TB Spacer, I think that would allow for it to be mounted in the stock LSJ location... eliminating the need to custom make the Vacuum Hose that connects to the TB and eliminate LSJ's from having to cut our TB wires and extend them.
Sooo... anyone know where to get the cheapest TB Spacer? I don't need any ports on it and it have to be big enough for the LS4 TB.
Thread Starter
Joined: 06-08-06
Posts: 15,725
Likes: 410
From: Fort Worth, TX
Well, the size of the TB Bolts most certainly isn't M8 x 1.25. Maybe M6x1.25... I will get the GM Bolts measured tomorrow to figure out what I have and try and have the bolt holes sized on your flange.
Another FYI... the way your flange is on there now... the TB will only fit on there upside down (compared to how it sits stock on an LSJ). If you were to include (either fabbed or bought) a TB Spacer, I think that would allow for it to be mounted in the stock LSJ location... eliminating the need to custom make the Vacuum Hose that connects to the TB and eliminate LSJ's from having to cut our TB wires and extend them.
Sooo... anyone know where to get the cheapest TB Spacer? I don't need any ports on it and it have to be big enough for the LS4 TB.
Another FYI... the way your flange is on there now... the TB will only fit on there upside down (compared to how it sits stock on an LSJ). If you were to include (either fabbed or bought) a TB Spacer, I think that would allow for it to be mounted in the stock LSJ location... eliminating the need to custom make the Vacuum Hose that connects to the TB and eliminate LSJ's from having to cut our TB wires and extend them.
Sooo... anyone know where to get the cheapest TB Spacer? I don't need any ports on it and it have to be big enough for the LS4 TB.
Thanks for the info on the studs USMCfieldMP. I just ordered my set to make sure they are here when i get this manifold back.
Let me know when you figure out the size and pitch of the TB bolt as i will have to order those as well.
Vulcan i think she we are pretty much your trial dummy's and we are helping you perfect your manifolds, you should hook us up with something....worth a shot lol.
Let me know when you figure out the size and pitch of the TB bolt as i will have to order those as well.
Vulcan i think she we are pretty much your trial dummy's and we are helping you perfect your manifolds, you should hook us up with something....worth a shot lol.
Thread Starter
Joined: 06-08-06
Posts: 15,725
Likes: 410
From: Fort Worth, TX
Thanks for the info on the studs USMCfieldMP. I just ordered my set to make sure they are here when i get this manifold back.
Let me know when you figure out the size and pitch of the TB bolt as i will have to order those as well.
Vulcan i think she we are pretty much your trial dummy's and we are helping you perfect your manifolds, you should hook us up with something....worth a shot lol.
Let me know when you figure out the size and pitch of the TB bolt as i will have to order those as well.
Vulcan i think she we are pretty much your trial dummy's and we are helping you perfect your manifolds, you should hook us up with something....worth a shot lol.
Sounds good... I'm currently trying to find the best place to order that TB Spacer from... I think Cobalt-Addiction has the best price for a regular spacer... but I don't know if theirs will accommodate my LS4 TB... and every time I've ordered from them it has taken 3 weeks for my order to arrive.
If there not M8, they are 1/4"-20. Im 100% positive of it.

^^ This is an example of the porting that will be STANDARD on all intake manifolds through us from this day on, I spent a few hundred on all brand new tooling for doing this and it adds in about an extra 1-2 hours per manifold. They are first trimmed down with heavy cut carbide burs, they are then smoothed down with a single cut fine bur and finished with high speed sanding rolls for a very smooth and flawless transition.
^^ This is an example of the porting that will be STANDARD on all intake manifolds through us from this day on, I spent a few hundred on all brand new tooling for doing this and it adds in about an extra 1-2 hours per manifold. They are first trimmed down with heavy cut carbide burs, they are then smoothed down with a single cut fine bur and finished with high speed sanding rolls for a very smooth and flawless transition.
Last edited by vulcanturbo; May 6, 2009 at 12:28 PM. Reason: Automerged Doublepost




