Has anyone Honed a stock LSJ manifold? i got a use one for cheap and i think im gona send it to a machine shop to get them to hone it out. or maybe use the money i would spend there and get a dremel and do it myself.

 

extrude honing would be much more even that you could ever do with a dremel or pretty much any other machining device.

 

mine was done this week but I'm not an LSJ

 

^^^what price did you get yours done for?

 

it was factored in with the valvetrain/headjob I had done,for the cost of the manifold Ill ask on Monday

 

yeah cuz i looked into it a while back and it was extremely expensive

 

my total bill for parts..one size up valves,retainers and seals, head job and manifold. labour in 2800.00 canadian, was not going to do this so soon, but since my cam install went south I thought"what the ****" might as well bullit proof it

 

well i was thinking of sending it out and getting the inside glass beaded to smooth out the inside of the manifol. its still better than paying $350Cnd for the extrude. and shoud gain about the same.. i hope!! i won't be putting it on untill i get the GMPP exhaust in march anyway so i have some time to work it.

 

extrude honing (like the GMPP manifold) uses a thick sand like material that is squeezed through the manifold to erode the internal walls. It opens it up as well as smoothes the internal surfaces.

 

I know what extrude honing is!! lol, but if i can polish out the inside of the manifold and do a bit of porting(if any) would it not be close to the same? in the least it should help. i may not get the 8Hp that people are saying they got but i also didn't pay as much!
i started to clean out the inside of the manifold today and wow is ther a lot of sharp edges and other things that cause a restriction in the stock manifold. im gona try and get a dyno of befor and after too. just to see if it helped, or if i wasted my time.

 

I don't know what anyone is talking about,I just paid to have it done

 

I wasn't sure so I thought I would post it.

That would actually be really benneficial to everyone if you did. Perhaps a step by step how-to if it yields significant gains?

 

The manifold is cast and its a bitch to get material out. If you want, and feel like putting a lot of time into, go for it. I priced having it done and the cost was more than the honed and extruded one GMPP sells. Thats just my experience at having it done....good luck to you...

 

well haveing the tools to do it and doing it myself, it realy isn't gona cost more than the manifold. yeah it may take some time, but i like it that way, and realy i don't have anything better to do with my time.
G5Mike- did you get yours Port and polished? if so did it help any, did you notice a diff? thanks

 

LOL i was just being hard on ya, not trying to be a dick.

and if it helps out i would try and do a How-to. guess i should take my camera and take pics. the only thin is gona be getting to the very inside of the outside two runners. thats the hard part.

 

No worries, I didn't take it that way.

 

Long story1 involves a friend and improper install of my stage 2 cams, anyways I should have the car back tommorro,as for the p&p I don't know how accuratly I'll be able to answer questions,you see. I dont have a DP/header yet, so that might interupt the flow. and you might be wondering why i did all this work without having the other boltons,well cause my buddy fucked my valvetrain, so since I had to fix it,I thought I would take things up a notch

 

^^^^ that sucks. but it should be sweet in the end. you'll have to let us know how it worked out

 

Good luck, be sure to measure your work. A lot of people will be waiting for results.