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If I wanted to polish just my intake manifold would it even be worth the time? I don't want to do any port matching and all that if I could get some gains from just doing the manifold ill stick with that also, not going for a MIRROR look finish either but if I can smooth out the cast marks and make it smoother inside might do that when I install the MDX spacer soon
came in this UGLY blue paint, and i had to spend time grinding the paint off.
i dont have any pictures of the ports...but they were a tiny bit larger than my stock one.
IT did come with a larger diameter throttle body, that some one bored!
I think only a dyno would prove any gains as it's probably in the 5whp range from porting a manifold and runners, so nothing you would feel that much. If you have the time, I would smooth out the casting marks and gasket match the openings. Just flip the manifold upside down and place the gasket in it's proper place. You can scribe a line or use marker to draw on the area that will need to be removed. It's super easy and you just need a rotary tool with different grit wheels. I didn't go mirror finish either.
I think only a dyno would prove any gains as it's probably in the 5whp range from porting a manifold and runners, so nothing you would feel that much. If you have the time, I would smooth out the casting marks and gasket match the openings. Just flip the manifold upside down and place the gasket in it's proper place. You can scribe a line or use marker to draw on the area that will need to be removed. It's super easy and you just need a rotary tool with different grit wheels. I didn't go mirror finish either.
That is exactly what I want to do! did you take the plenums off as well? im thinking since I polished the mdx spacer ports using an 80 grit flap wheel and a 120 grit that should do the trick right?
i spent days doing mine to a mirror finish ,,, sure it wasnt much but was the second 3.5L swap ever and had every other bolt on including had my TB done by king ... havent kept up much but 13.306 @105.83 i think is still an all motor best ?
i spent days doing mine to a mirror finish ,,, sure it wasnt much but was the second 3.5L swap ever and had every other bolt on including had my TB done by king ... havent kept up much but 13.306 @105.83 i think is still an all motor best ?
Welcome to AZine.
You should post some pics. Unless of course, you're a liar... Just kidding, 13.3 is crazy good for NA!
Got the manifold polished up the best i could today took a few hours but have not had a chance to tale for a spin yet since i painted the valve covers, plenums and top plate
came in this UGLY blue paint, and i had to spend time grinding the paint off.
i dont have any pictures of the ports...but they were a tiny bit larger than my stock one.
IT did come with a larger diameter throttle body, that some one bored!
I just did this over the weekend. I used VHT wrinkle plus to give it a nice texture and also with the valve covers I used VHT wrinkle plus turned out really good
Last edited by mattcl-s; Jul 24, 2017 at 08:43 AM.
He's OG, yo!
