4.10s, IRS, and an intermittent knock...

ReverendDexter · April 27th, 2008, 10:46 PM

Does anyone know from experience how much an otherwise stock '98 Cobra will pick up in a 1/4 doing NOTHING more than 4.10s?

Also, if I wanted to swap in the IRS from a '99-'04, what's required? I've heard that it bolts directly in, I've also heard there's a couple holes that have to be drilled/reinforced. Can someone who's done this chime in? I'm not looking for more internet hearsay.

Lastly, I'm noticing a little bit of a rough idle/almost knock sound when I fire up my car on a "cool" start. I.e., it won't do it if it's been parked at least overnight, it won't do it when it's warm, only if it's been fired up and ran about 4-9 hours prior. Once the motor's warmed up, it totally goes away. Any thoughts? I was gonna start by cleaning the mass air sensor/throttle body, but...?

Thanks, and sorry for the multiple random questions in a single thread!

Elder · April 27th, 2008, 11:20 PM

i know this isnt the answer your looking for but if your seriously considering an IRS. mine has 4.10's h&r race springs and bielstein shocks. i would strongly consider a trade if your interested

ReverendDexter · April 27th, 2008, 11:26 PM

Originally Posted by Elder

i know this isnt the answer your looking for but if your seriously considering an IRS. mine has 4.10's h&r race springs and bielstein shocks. i would strongly consider a trade if your interested

By trade, I'm assuming you mean your IRS for my live axle, yes?

I'd probably do that if you were 2,000 miles away!

Elder · April 27th, 2008, 11:29 PM

ya shipping would be a bitch. but i would LOVE to get my hands on a cobra live axel like my old one. because there are difference between cobra's and GT's. does your live axel have anything done to it?

ReverendDexter · April 27th, 2008, 11:43 PM

Just bilsteins... otherwise it's bone stock.

Elder · April 27th, 2008, 11:47 PM

well id kinda be screwin myself but if your serious about looking into a shipping qutoe i will aswell. straight across. just cause its cobra to cobra

ReverendDexter · April 27th, 2008, 11:52 PM

Originally Posted by Elder

well id kinda be screwin myself but if your serious about looking into a shipping qutoe i will aswell. straight across. just cause its cobra to cobra

I appreciate it, but I don't think it will be worth it for either of us to ship it that far.

Plus, this is my DD until I can pay for the new motor in the Camry, so I can't really afford to have it down that long

Elder · April 27th, 2008, 11:53 PM

DAMN lol i want a cobra live axel bad. if for some reason you change your mind shoot me a PM ill take you up on it

ReverendDexter · April 27th, 2008, 11:56 PM

Originally Posted by Elder

DAMN lol i want a cobra live axel bad. if for some reason you change your mind shoot me a PM ill take you up on it

Heh, if you're interested in about 2 months that's probably when I'll have the money/time to do it, and the Camry back together (turbo motor, yay!), that's assuming my buddy doesn't convince me to go torque-arm by then.

Elder · April 27th, 2008, 11:58 PM

let me kno. that would give me some time to save and get a tru trac. and 31's for it. just shoot me a PM and well see whats up

April 27th, 2008, 10:46 PM	#1
ReverendDexter Priest of the Car Gods Clapped-out '90 GT 'vert ~5.5 seconds off TTOD :( Join Date: Jan 2007 Location: Rohnert Park, CA Posts: 13,808 iTrader: 0 reviews	4.10s, IRS, and an intermittent knock... Does anyone know from experience how much an otherwise stock '98 Cobra will pick up in a 1/4 doing NOTHING more than 4.10s? Also, if I wanted to swap in the IRS from a '99-'04, what's required? I've heard that it bolts directly in, I've also heard there's a couple holes that have to be drilled/reinforced. Can someone who's done this chime in? I'm not looking for more internet hearsay. Lastly, I'm noticing a little bit of a rough idle/almost knock sound when I fire up my car on a "cool" start. I.e., it won't do it if it's been parked at least overnight, it won't do it when it's warm, only if it's been fired up and ran about 4-9 hours prior. Once the motor's warmed up, it totally goes away. Any thoughts? I was gonna start by cleaning the mass air sensor/throttle body, but...? Thanks, and sorry for the multiple random questions in a single thread! __________________ O o /¯/______________________ \|BLAAAAAAAAAAAAAAAAAAAAAAAAARGH!!! \_\

April 27th, 2008, 11:43 PM	#5
ReverendDexter Priest of the Car Gods Clapped-out '90 GT 'vert ~5.5 seconds off TTOD :( Join Date: Jan 2007 Location: Rohnert Park, CA Posts: 13,808 iTrader: 0 reviews	Just bilsteins... otherwise it's bone stock. __________________ O o /¯/______________________ \|BLAAAAAAAAAAAAAAAAAAAAAAAAARGH!!! \_\

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