Kobra's 1992 SW20

[GDII]

America have an odd way of dating their cars. JDM cable speedo is dated 90 to end of 91 where USD is dated 91-end of 92. A JDM 90 is a USDM 91. Cars dated as 91 are usually older than my June built 90.

[Swampy]

If there's no speedo cable, I'm assuming that mean these cars have electronic speedos.

Happy 100,000th birthday. Mine doesn't even have glue on the shift boot. It may just be the pics, but it looks like yours has a short shift kit.

[JasonFriday13]

The 1990-1991 cars have cable speedo's, the 1992+ cars have electronic speedo's. This is for JDM cars.

[Kobra]

I never really like the wheels that came with the car, so I bought some BBS RGII's from another forum goer. 17x8, 17x9, both ET35, perfect staggered fitment.

The Rears came with 255/40R17's which I've read may possibly fit, so I put them on to test, sure enough, they rubbed on the guards under cornering.


The wheels weren't in terrible shape, but they had some curbing, and badly needed to be repainted.



On with some primer filler


Gunmetal grey



The final results




Quite happy with how they turned out.

Now I think I need to start looking for some new suspension to give the car a wee bit of a drop...

[JasonFriday13]

Looking good .

[Kobra]

I'm keen on some TRD springs and Koni yellows. Still researching where the best place to source them from would be.

[GDII]

Not sure where you can get TRD springs from as I think there are no more new ones available. If you can find a second hand set that might be your only option now.
Koni shocks, TwosRus.com, 41.co.nz, gerogestocks.co.nz.

[Kobra]

Hmm, I may have to do some more research before I do the suspension.

A few weeks ago a friend of mine bough a Toyota Carib with a black top 4age. We took the car for a wee hoon as soon as he picked it up and I instantly fell in love with the induction noise. It got my thinking about the intake system on my MR2. Upon closer inspection, after some de-constructive surgery, I realised just how complex the factory induction system really is.

I counted 4 different resonance chambers:
1 very large one attached to the intake pipe that feeds the airbox from the side vent.
2 attached to the intake pipe that runs between the airbox and the throttle body, a small one on top, and a larger one on the side.
The last one was found as a small part of the bottom half of the airbox, this one doesn't bother me.

I decided to remove the 3 larger chambers, for science, and also to try expose some more induction noise.


I'm temporarily blocking off the extra holes with some awesome galaxy star pattern duct tape that I found in one of my boxes.



I took the car for a ride, and only noticed a tiny bit more noise if anything at all. Maybe it was hidden behind the exhaust note?
Anyway, now I'm considering whether or not to ditch the factory airbox, and go for something like a pod filter setup. (I know they don't make power)

Here's how she stands currently


I really do need to get rid of some of that wheel gap :/

[GDII]

I found taking off the 2 resonators on the intake pipe and changing the filter to a simota panel filter made good sound gains. I tried taking off the massive one but I didn't like the sound so put it back on. With all the resonators on it made the car sound like it was very unhappy at higher revs above 5k.

I don't think you'll get the same sound as an ITB setup on these cars but a pod filter on a pipe might get it closer. Just make sure you don't start sucking in hot air from the engine bay, the stock system is good for cold air being down in the side vent.

[Swampy]

Just make sure you don't start sucking in hot air from the engine bay, the stock system is good for cold air being down in the side vent.

I agree. Getting a heat shield as well as placing the filter in a similar place where the stock one is will help avoid the problem of hot air. Any lower and you run the risk of sucking in water if you drive in storm conditions or across small streams.

[rocco26]

Hi ,I found the best result for a pod .is to put it in a cold air induction box and fed from a tom's style snorkel great induction sound especially for the passenger.( exacting what the s2000 has, no-brainer there )I also have a pod on the black one with a k&n pod filter housing and together with the after market exhaust it makes great sound when you put the hammer down ,but quiet when just cruising around. Hope this helps.

[Kobra]

Not really interested in doing a snorkel. I may just look into an aftermarket panel filter for the factory box.
If I do a pod filter, I'll try position it as close to the side vent as possible. Maybe even create a heat shield from some aluminium sheet.

[Benckj]

TBH the stock filter box works very well. An aftermarket filter is only an improvement if you clean it on a regular basis. It won't add any induction noise though as you would need to go with a pod for this. PM me if you want to buy a used filter as I think I have a spare one around.

The snorkels don't add any cold air into the system as they try and push air the wrong way. Circulation comes from the side vents and underbelly of car through engine lid.

[rocco26]

A bit of a late reply. Jim my snorkel feeds air in to an enclosed air induction box via ducting .Very little of the air which enters the snorkel makes it into the engine bay.