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Old 11-17-2001, 09:13 AM   #1
jeffsnyder
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Default rallispec intake for 99

hey i have a question for ppl about this

how do i modify the intake that was for a 99 to work on a 98.

i have it all installed but there is still on hose that isn't connected that will not allow the car to run, it just stalls.

the hose that i'm talking about it the one that is about 1.5 around and on the factory intake it connects right after the sensor.

~JEff
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Old 11-17-2001, 11:45 AM   #2
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From your description, I think you are implying that there is a breather hose that is still not hooked up. This should NOT make your car stall. The breather hoses (3) should be plugged into the supplied catch can. The Rallispec intake is one tube from filter to throttle, go back and make sure there are no leaks at the silicon tube at the throttle and at the MAF sensor. Make sure the connector at the MAF sensor is plugged tightly and that you havn't plugged any vaccume hoses near the MAF sensor.

Also check this link for install pics.
http://8complex.mwsoc.org/rallispec_intake/
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Old 11-17-2001, 01:26 PM   #3
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98s have 4 hoses, 1 to each head, and 2 (1 huge, one normal size) go somewhere else =P so i guess you'd have to get another nipple on the pipe somehow or you could do like the stock airbox does and T the nipple into two to use 4 hoses on only 3 nipples, which would probably be easier than putting in a new nipple.
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Old 11-18-2001, 02:13 AM   #4
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That hose is the idle control line - do NOT "T" it into the other lines or you will suck oil into the Throttle Body and smoke like a cigar!

It needs to be connected to the intake tubing behind the MAF to work properly.

Larry
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Old 11-18-2001, 04:27 AM   #5
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didnt know that, just recommended it because the airbox does it for the two that go to the heads, maybe you can tee one nipple into two for those two hoses and leave the idle control hose a nipple for itself?
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Old 11-18-2001, 08:30 AM   #6
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so that means i have to tap the tube after the maf sensor then and plug it in there


~JEff
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Old 11-18-2001, 11:49 AM   #7
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Yeah, the idle control nipple needs to have air flowing past it at high velocity - the airbox behind the motor is supposedly big enough to be almost at atmospheric pressure so the nipples in the airbox would not be good enough for that line to connect there if you were using one of them.

Since the Rallispec has high velocity air throughout, it would be possible to slide a small hose on the small 99 size nipple closest to the MAF to make it fatter, so the big idle control line will fit on it and hose clamp it in place. Then T- the other oil fume vent lines together.

Or, he will need to tap into the pipe with a hole and a liquid nails or JB Weld a small pipe in the hole to make a vacuum nipple.

Larry
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Old 11-18-2001, 11:54 AM   #8
jeffsnyder
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hey thanks for the info

i'll get a elbow fitting and tap that into that the pipe and conncet that hose to it and it should work.

i'll try it again later this week and c if it works.

~JEff


PS
does that line blow oil out

Last edited by jeffsnyder; 11-18-2001 at 12:08 PM.
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Old 11-18-2001, 02:17 PM   #9
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it's not really a matter of blowing oil out i dont think.

the reason he said that seems to be because the idle control hose would suck oil up through the venting hoses if they were t-ed. it seems that under normal operation they just vent the oil fumes, not oil, into the intake tract.
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Old 11-18-2001, 02:35 PM   #10
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okay so all i have to do is tap ahole into the pipe after the sensor and plug that hose into it then


~JEff
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Old 11-18-2001, 05:29 PM   #11
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im not sure why you guys keep referring to after the sensor, all the hoses on my car at least (98) are after the sensor, before the throttle body. there are no hoses before the sensor at all.

meaning... yes, after the sensor, where all the rest are.
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Old 11-19-2001, 02:48 PM   #12
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"After" or "Behind" the MAF are referring to the direction of air flow from filter to MAF to tubing to air plenum to throttle body.

The idle control line for the MY 98 connects to the intake just after or behind the MAF where the air velocty is high, yet before the other vacuum nipples so there are no fumes from the crank and valve cover breathers to get sucked into it.

Larry
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Old 11-19-2001, 04:06 PM   #13
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oh, i gotcha, just didnt recognize that you meant before the rest of the lines, thanks for clearing it up
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