intake manifold question

[javier302]

i just bought on ebay stock upper and lower intake manifold (5 bucks plushipping), i was thinking about getting a dremel and try to make all the holes bigger (bore) and if i mess it up, i still have mine to put back, will this give me any prformance? how much should i take off? anyone tried before?

thanks
javier
86 gt 5sp

 

[Roland69]

bolt them togeather and try some acid porting..

 

[Darkwriter77]

Send 'em to TMoss and have 'em done right. I hear nothin' but good things about his work.

 

[javier302]

couple of questions about that
where is it?
how much, around...
and how much performance? is it worth it?

thanks

 

[v8only]

tmoss is a user name and he posts on this board. Just send tmoss a pm. he's also got a site I believe that will show you step by step how to port it yourself. My buddy has done several of them with astonishing results.

 

[Maryland Stang]

Unless you know how to puddle weld aluminum I wouldn't even bother. The number 1 and 5 runners need to be puddle welded before you can port them or you will break through the runner. Ironically enough it's the number 1 and 5 runners that need the porting the most.

Send it to TMoss before you end up with scrap aluminum.

 

[jrichker]

Try http://www.tmossporting.com for the ported parts & lots of good info.

See http://www.diyporting.com/ for do it yourself porting information. You find that the light duty dremel isn't really up to the job. You need a heavy duty one or an air powered die grinder.

 

[GTOreturns]

Put it back on Ebay and buy a Cobra.

 

[javier302]

thanks for the info, anyone know how much hp/tq gain you can get out of these, is it worth it, or should i put it back on ebay?

 

[GTOreturns]

thanks for the info, anyone know how much hp/tq gain you can get out of these, is it worth it, or should i put it back on ebay?

The stock intake falls on its face at 4000RPM. The Cobra is fairly cheap in price and gives "FAR" better performance. In low end torque and up high!!

 

[Flavadave4]

send it to Tmoss......he did mine and did a great job, super nice guy too.

 

[v8only]

I believe it can be jbwelded when you break through, that's what My friend has been doing with no issues.

 

[tmoss]

After LOTS of experience, you can get them to flow just as well with no welding ( I used to use small puddle welds, but have not for about 2 years) - but you have to know where and how much to cut.

I now have a flow bench and will be experimenting with porting designs on both the lower and upper with documented results.

 

[tmoss]

thanks for the info, anyone know how much hp/tq gain you can get out of these, is it worth it, or should i put it back on ebay?

250-260RWHP/300+RWTQ on most well matched mild combos. Highest so far is cleanLX - 280RWHP/330RWTQ with a stock length upper and 292/325 with one shortened ~1.75". There are lots of data and dynos on my website.

 

[tmoss]

thanks for the info, anyone know how much hp/tq gain you can get out of these, is it worth it, or should i put it back on ebay?

250-260RWHP/300+RWTQ on most well matched mild combos. Highest so far is cleanLX - 280RWHP/330RWTQ with a stock length upper and 292/325 with one shortened ~1.75". There are lots of data and dynos on my website.