What have you done to your RX-8 today????

[johnbb99]

---Fast idle---

CO:
0.019 (0.200 max)

HC:
15 (200 max)

---Natural idle---

CO:
0.072 (0.700 max)



So with a healthy engine and cat, plenty low enough.

With a decat.... very, very low as it'll be up the tail pipe of a Tesla or something

My figures:

---Fast Idle---
CO is 0.08
HC is 11ppm

---Natural idle---
CO is 0.02

are the differences significant?

[13Black]

Nah, be reet.

[untakenname]

Used a sacrificial oil filter whilst I changed my oil over from mineral to synthetic, I can see why HKS claim a 30% improvement in flow in their filter over oem:

IMG_20181016_180255.jpg

IMG_20181016_181000 (1).jpg

Used a vacuum gauge on my valves to try and narrow down why my engines down on power, idle is at around 5g/s and couldn't see any leaks but did notice that this uncapped nipple, is it meant to be like this or have a hose attached?

IMG_20181026_121628.jpg

I have capped off my vfad as have a Revi duct but haven't noticed this one till today.

[V8 Power]

Had my geo set up by Fergus at FW motorsport today.
Toe front and back was out as were camber settings.
Felt good on way home but will have to see how it performs on track to gauge full benefit.

[mrspiller]

Had my geo set up by Fergus at FW motorsport today.
Toe front and back was out as were camber settings.
Felt good on way home but will have to see how it performs on track to gauge full benefit.

What settings are you using ?


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[warpc0il]

viewtopic.php?f=6&t=77422&hilit=sports+suspension+table

[mrspiller]

viewtopic.php?f=6&t=77422&hilit=sports+suspension+table

Interesting read , thank you


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[mi60o0]

New rad in fans in the doggy intake in until I put the oem box.
Also another oil change done and new filter
Cuz I was suffering and low oil pressure when hot at idle was dropping to almost 0 now I give it the beans after this oil change seems better
Also I think to order from Essex rotary oil pressure regulator and drop the pan next Saturday and add shrims on the front and add rear regulator. To increase preside at idle with the shrims and on high revs with the rear think.
The new rad fans and thermostat seems to do nice job didn’t go above 95 even giving it the beans and the engine bay is open I mean no foam and undertray from the intake
Also I’m getting my veilside kit off and putting oem aero bumpers and I will put my spacers I think on the ms wheels.

[warpc0il]

What do you mean by " no undertray" ?

Without the undertray there's nothing to channel cooling air through the radiator.

Even just having the rubber seals around the rad missing, letting some channelled air bypass the core, can cause overheating.

Hopefully I read your post wrong.

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[Eddie_r32]

With the undertray, Mishi rad and stock fans I had heat issues as with the Mishi rad you lose all the foam that fills the gaps around the rad up, I over engineered my solution to it and made a world of difference. (all the metal has foam on the back to stop it rubbing the rad)

[13Black]

To increase preside [sic] at idle with the shrims and on high revs with the rear think.

Sozzz errbody but I'll quite openly disagree with their claim that adding shims on the front pressure reg has -any- effect on idle pressure.
It can't. That reg is set to about 120psi bypass as standard.
I have no idea where they get this from or why they say this. I think a misinterpretation of a Pineapple Racing video.

I'd be concerned that low oil pressure at idle would be something to do with bearing clearance or a worn oil pump.

[mrspiller]

With the undertray, Mishi rad and stock fans I had heat issues as with the Mishi rad you lose all the foam that fills the gaps around the rad up, I over engineered my solution to it and made a world of difference. (all the metal has foam on the back to stop it rubbing the rad)

Ed
Nice work , do you think that the filter makes any difference to the air flow towards the radiator ?


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[Eddie_r32]

With the undertray, Mishi rad and stock fans I had heat issues as with the Mishi rad you lose all the foam that fills the gaps around the rad up, I over engineered my solution to it and made a world of difference. (all the metal has foam on the back to stop it rubbing the rad)

Ed
Nice work , do you think that the filter makes any difference to the air flow towards the radiator ?


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I don't think so, if you look at where the filter is, it sits behind the blanked out section of grill, where the air intake for rad is lower down so I feel that the flow goes under the filter, it will obviously steal some air flow, if it's measurable though is another story.
I an going back to stock intake and putting a revi scoop on it though now.

[mrspiller]

With the undertray, Mishi rad and stock fans I had heat issues as with the Mishi rad you lose all the foam that fills the gaps around the rad up, I over engineered my solution to it and made a world of difference. (all the metal has foam on the back to stop it rubbing the rad)

Ed
Nice work , do you think that the filter makes any difference to the air flow towards the radiator ?


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I don't think so, if you look at where the filter is, it sits behind the blanked out section of grill, where the air intake for rad is lower down so I feel that the flow goes under the filter, it will obviously steal some air flow, if it's measurable though is another story.
I an going back to stock intake and putting a revi scoop on it though now.

I got you , Thanks


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[mi60o0]

Old bumper on and stock airbox setup on

[ChrisHolmes]

To increase preside [sic] at idle with the shrims and on high revs with the rear think.

Sozzz errbody but I'll quite openly disagree with their claim that adding shims on the front pressure reg has -any- effect on idle pressure.
It can't. That reg is set to about 120psi bypass as standard.
I have no idea where they get this from or why they say this. I think a misinterpretation of a Pineapple Racing video.

I'd be concerned that low oil pressure at idle would be something to do with bearing clearance or a worn oil pump.

Agreed Nick, it will increase the max pressure from the pump but at idle of course the pump is not producing max pressure.
Mine is packed 3mm and I have an RX7 pressure relief valve. At startup the gauge is hard up against the max reading of 7bar!
At the 3000rpm and 100'C oil pressure check point recommended by Mazda my pressure is 4.25 bar versus the minimum 3bar quieted by Mazda. The engine idles at .5 to .7 bar.
After my latest oil change when I checked the pressure I had gained almost 1bar at 2500rpm!

[13Black]

I do believe that reg's only function is to stop the pump grenading itself if an oil cooler/pipe were to become severely blocked, in the event of a front-ender crimping a pipe for example.
I don't expect there to be that much of a pressure drop between the front and rear regulators for the front to ever bypass fully.

Answers on a post code.
Idle though? Never. Only spinning the pump up quicker would achieve that.

[mi60o0]

To increase preside [sic] at idle with the shrims and on high revs with the rear think.

Sozzz errbody but I'll quite openly disagree with their claim that adding shims on the front pressure reg has -any- effect on idle pressure.
It can't. That reg is set to about 120psi bypass as standard.
I have no idea where they get this from or why they say this. I think a misinterpretation of a Pineapple Racing video.

I'd be concerned that low oil pressure at idle would be something to do with bearing clearance or a worn oil pump.

Agreed Nick, it will increase the max pressure from the pump but at idle of course the pump is not producing max pressure.
Mine is packed 3mm and I have an RX7 pressure relief valve. At startup the gauge is hard up against the max reading of 7bar!
At the 3000rpm and 100'C oil pressure check point recommended by Mazda my pressure is 4.25 bar versus the minimum 3bar quieted by Mazda. The engine idles at .5 to .7 bar.
After my latest oil change when I checked the pressure I had gained almost 1bar at 2500rpm!

So I had issue mby still have but is better my car when hot was low oil pressure at idle
And under load is going to 5 bar max atm is idling just under one bar but some time to under and go up so is going 0.5 to 0.75 let’s say
And my braker was idling at over one bar and going over 5k had changed regulator dunno make or what but I think to swap it over this Saturday and another oil change
Any recommendations for the sump seal ?

[ChrisHolmes]

If your pressure is minimum 3bar at 100'C and 3000rpm then that meets Mazdas parameters. A small change in idle speed is reflected by a significant change in oil pressure. Sorting the idling speed important so that it is at a steady rpm then your oil pressure will not fluctuate as the idle speed will be steady.

[mi60o0]

If your pressure is minimum 3bar at 100'C and 3000rpm then that meets Mazdas parameters. A small change in idle speed is reflected by a significant change in oil pressure. Sorting the idling speed important so that it is at a steady rpm then your oil pressure will not fluctuate as the idle speed will be steady.

Tonight I will get it for the test run to the post office need to send some parcels etc so will see the oil pressure at 3k

[feedthegoatxi]

added some extra stickers...

[kopite72]

liking the 13B one

[SeeJay]

Who did the 13 bee one?

[jondkent]

They're on eBay, easy search. I've got one a while back, really nice

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[feedthegoatxi]

yeah, all off ebay