FFI dhort runner or long runner or meduim

NashMan

NashMan

WTF did he just wright ?
Aug 5, 2005
4,940
17
38
43
Victoria BC
well i sold my old one it was pretty much stock runner



any wya this is for peopel that have whent form long runner to short runner intake's do you feel a diff wiht these and what is the diff



short runner mroe hp long runner mroe truq
 
supra90turbo

supra90turbo

shaeff is FTMFW!
Mar 30, 2005
6,152
32
48
40
MA, 01440
Ron R. Said his long runner flowed 280cfm/runner and his short, 300cfm/runner.

I'm sure there's a pretty good difference, especially when you start pushing 2bar...
I have no personal experiences, though...
 
NashMan

NashMan

WTF did he just wright ?
Aug 5, 2005
4,940
17
38
43
Victoria BC
humm i just woundering what that big of chnage in runner langth does ot teh 7m power band ect


see ia hve only cams in my head that is all that si all so one reosn why i never got a 80mill thottle plate
 
NashMan

NashMan

WTF did he just wright ?
Aug 5, 2005
4,940
17
38
43
Victoria BC
welll i know that but i wanted some poepel to repile saying well my car did this or my car did that or fuck did not notice a thing type of deal


plsu i ahve stock head so will short runner even do any thing
 
Reign_Maker

Reign_Maker

Has cheezberger
Aug 31, 2005
5,767
0
0
52
Florida
FFI owns stock intake... That's all that matters... There have been guys that picked up 40+rwhp from going ffi only...

I chose the long runner, because Im not raising my RPM limit, and I want the low end torque... I'll let you knwo how it works for me, but it might be a while...
 
MK3_300

MK3_300

91T...under construction
Mar 30, 2005
54
0
0
40
Murfreesboro ,TN
Reign_Maker said:
FFI owns stock intake... That's all that matters... There have been guys that picked up 40+rwhp from going ffi only...

I chose the long runner, because Im not raising my RPM limit, and I want the low end torque... I'll let you knwo how it works for me, but it might be a while...
Click to expand...


EXACTLY! No matter which style you go with a good FFIM will out perform the stock 7M intake manifold by far. On stock boost levels the differance most likely won't be all that much between the two.....I can't say for sure but it would seem like the higher boost levels/ higher HP levels and higher RPM's you are at the bigger the differance would be between a short runner and a long runner style FFIM. I just ordered a short runner FFIM from Sethron71.......my friend Jonathan has one from him too........when we get our new externaly WG turbo/FFIM set-ups complete....We'll let you know the differance.
 
Orion ZyGarian

Orion ZyGarian

Jeff Lange wannabe
Apr 2, 2005
1,490
0
0
35
Sarasota, FLorida
www.suprastore.com
I know of the long/short runner theory, but does that still hold true for forced induction? The theory as I was taught was for N/A, just wondering if it still holds true...

Reason I ask is because theoretically, you'll get boost sooner on short runners because less area to pressurize...does it work in the same theory that more compression will make what I call better "N/A power", or in other words off-boost power? Thus, long runners although theoretically a bit laggier (doubtfully noticeably laggier) will still make more bottom end grunt?
 
NashMan

NashMan

WTF did he just wright ?
Aug 5, 2005
4,940
17
38
43
Victoria BC
Orion ZyGarian said:
I know of the long/short runner theory, but does that still hold true for forced induction? The theory as I was taught was for N/A, just wondering if it still holds true...

Reason I ask is because theoretically, you'll get boost sooner on short runners because less area to pressurize...does it work in the same theory that more compression will make what I call better "N/A power", or in other words off-boost power? Thus, long runners although theoretically a bit laggier (doubtfully noticeably laggier) will still make more bottom end grunt?
Click to expand...

yes it still aplies to turbo cars cause air flow is air flow

next time you have a air compreser swap air nozzles from a none tube type to a long tube type

it's really how you stream the air flow to the head so run size and langth applies alot




i tried hard to make my point though it suck alot i knwo alot but cna spell have of it
 
U

upgradedsupra

.
Dec 3, 2003
6,653
0
0
Canada
Been there done that. (had both that is) The stock intake runner vs a short or even long is a major difference. I gain almost 40 wheel hp just by switching on my car and spool was around 300 rpm's quicker. I also gained this power at less boost. Throttle response was also noticeable to me. Is it worth it?..yes, would I suggest it?..yes. but not only does it make power, it makes things alot easier to work on and is much cleaner.

My .02

Duane

Here is a pic of mine again. I have the RR mani ;)

custommanifold.JPG
 
B

blackout_89t

King of the roll
Apr 25, 2005
488
0
0
Toronto
Keep in mind the CFM of a stock 7m head is pretty poor..

197cfm int.
141cfm exh.

Which style will give better throttle response, short or long runner FFI?
 
suprahero

suprahero

naughty by nature
Staff member
Aug 26, 2005
14,971
0
36
54
Roll Tide
Now for the ten million dollar question: Where is the best place to buy a FFI? What would a fair price be for one?
 
NashMan

NashMan

WTF did he just wright ?
Aug 5, 2005
4,940
17
38
43
Victoria BC
blackout_89t said:
Keep in mind the CFM of a stock 7m head is pretty poor..

197cfm int.
141cfm exh.

Which style will give better throttle response, short or long runner FFI?
Click to expand...

that is right caus ei know for fact that dune head is ported ect and going form 60 mill to 80 mill is a big chnage
 
U

upgradedsupra

.
Dec 3, 2003
6,653
0
0
Canada
suprahero said:
Now for the ten million dollar question: Where is the best place to buy a FFI? What would a fair price be for one?
Click to expand...

One place and one place only. > ronram7728@aol.com Email Ron as he makes the best quality parts by far and price is good. These are also flow tested. You can get one like mine or a similar one which he can get a pic for you.

I failed to mention that my intake from Ron flows 333 CFM per runner (better than the Veilside for the MKIV's at less than half the price ;))

Duane
 
You must log in or register to reply here.
Top Bottom