ffim questions

[twistedshadows]

hi
me and a friend have be building are 7mgte motor for a while now we have je forged pistons and eagle rods with all arp hardware and a hks mhg we want to run a front facing intake manifold to clear up the inner cooler piping and run 2j coils for are mega squirt ecu
were planning on buying are tubing from ross machine racing the d shaped plenum but i cant figure out exactly how to modify the tubing to keep a decent cylinder balance
its going to be a long runner and where gonna relocate the battery and kick the throttle body out so we dont have to relocate the alternater
any advice at all would be great
thanks
joe

and sorry for the long post just not a lot of GOOD info about building a intake

edit: horse power goal is 450-500 at around 20 psi and i think thats still a little on the high side for the horse power

 

[7Mboost]

You'd be good on stock manifold for those power goals, and you could always port it. Advice on the FFIM? Be ready for a lot of modification to fit everything in different ways.

 

[twistedshadows]

well we have nothing but time were trying not to dump to much money into this car tho thats why we figured we design the intake are selfs and have are welder weld it up for us and i do know that the stock intake will flow better and probably perform better to but were trying to clean up the engine bay and just simplify everything but we dont want to make a intake with 1 and 2 getting tons of air 3 and 4 not some much and end up blowing this engine

also we LOVE making stuff are selfs we can never learn enough to keep us happy this project just keeps getting bigger and bigger each time my friend or me comes up with a new idea

thanks
joe

 

[Rennat]

your not going to strave certain cyliders, its a turbo car! lol

i was going to use a 28'' long by 4'' diamater, because it was going to give me twice the volume of the enigne in the plenum. Which if i remember correctly was decent enough in volume for what i wanted.

OR

The other thing you can do is block OEM TB spot, and weld a tube onto the front and make the 7m intake manifold into a ffim... thus you retain all of the stock stuff and if you do it right, and then paint it, it'll look 100% oem!

Whats your end result for this car? a daily or a weekend 600+ kind of car?

 

[twistedshadows]

well its my friends car because hes the one that spends all the money lol but im basically the one building it were trying to get a all round car a little show enough power to blow the doors off w/e ricer shows up down here in miami and he wants to daily drive it but i dont think thats going to last once he starts driving it and is only getting 18 mpg lol

well i have seen a good many intake jobs and most of them have a progressive shape to make sure air flows evenly to each cylinder but i have also seen just log shaped intakes on 2jzs and ka24dets but like i said before i just dont want to take any chances and blow this motor after all the hard work thats been put in but nether of us have the skill to make a intake out of thick enough sheet metal to get that progressive shape but if a few others come round and say just a simple log shaped intake is safe to run (maybe have the rlunners sticking in the plenum about a 1/4 inch) then thats defently the way im going to go

thanks again
joe

edit: oh and were not keeping most of the stock intake stuff such and the idle air control, egr, cold start, etc it would be hard enough to get all that working with the mega squirt and down here in miami fl we dont have to worry about inspection or anything so as long as the motor runs good with out it we didnt really need it in the first place (well not really the idle air control we may keep and the cold start would be nice to have but waiting a little to warm up a car is no big deal)

 

[Rennat]

you dont need a FFIM to blow apart ricers... hahaha

most weld on a 3-4'' tube... and then weld the inside and outside of the runners, cut the tube in half, and then hand port the runner entrance so its a radius and is smooth into the runner. which is the best design... if you just go and look for the RonR FFIM's... just copy what he did.

Just search around and you'll find what your looking for...

 

[twistedshadows]

well ffim is just to make things easier for all my crazyness (i love the simple and elagent thats why when u look under the hood of the mk3 when were done all ull see is motor ) but i will take ur advice and look around
thanks again lol
joe

 

[twistedshadows]

ok a found a lot of ronrs ffim pictures and if people have be running them for that long with np then thats the way will go

thanks
joe

 

[twistedshadows]

heres what we came up with (bear with me i know the pic looks like crap but i just want to get my point across)
its going to be a aluminum tube with some thing like a 30-20 degree angle cut into two pipes then welded together again with the tb at the end but im worried about the air not wanting to make the turn and causing cylinder 1-2 to run lean this is what we came up with because we dont want to move the alternator and were moving the battery anyways
any help at all is great and feel free to laugh at me im learning as i go (and i cant draw for shit )
thanks
joe

 

[buckshotglass]

Seven runners is cool man.
I'm building a FFIM too.

 

[Woody1989]

Seven runners is cool man.
I'm building a FFIM too.

Yah, seven runners might pose a problem for an I6.

Has anyone found a FFIM "kit" with piping, intercooler and everything for a complete 7MGTE package?

Are either of these worth a shit?

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=370045557303

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=140226909007

Thanks,


Brad

 

[twistedshadows]

lol i wasnt counting just trying to get my point across

 

[twistedshadows]

the ball racing 1 looks like it wouldnt be to good but im not sure it looks like they just left the runners sticking into the plenuim without any velocity stacks no idea how that would really effect performance
the only problem with sheet metal intakes in they can be weak so if ur not planning on crazy boost i dont see any problem with ether intake
joe

 

[sethron71]

Hey Joe,
I have been building them for a while. The log design works fine. Here are a few pics of ones I have built:

Alternator is simply lowered therefore you can retain A/C for the Miami heat!

And a few others:

One thing you always have to remember is it is turbo'd therefore the plenum is totally full of air under boost! But of course all mine have smooth edging to promote the best off boost performance as well.

Here's a pic of the porting:

Also the before mentioned moving TB to end:

PM if you have any questions or if you are in need of an alternator drop down bracket!

HTH,
Seth

 

[upgradedsupra]

Yah, seven runners might pose a problem for an I6.

Has anyone found a FFIM "kit" with piping, intercooler and everything for a complete 7MGTE package?

Are either of these worth a shit?

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=370045557303

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=140226909007

Thanks,


Brad

Ron R on the board here has been making these for a LONG time. He did stop for a while due to lack of space but he is getting a shop set-up and will be making them again soon. :naughty:

His name is JT2MA71 on the board.

Duane