5W30 Oil Don't Cut it, Engine Bearing Pics 58K S1 RX-8 from England. - Page 31

GeorgeH · 11-20-2009, 09:52 AM

Quote:

Originally Posted by ayrton012

Strange that you feel them warm 1 min after cold start! S2 thing???

Apparently not - as has been stated by several S1 owners, myself included, our oil coolers begin to warm almost immediately.

So, either there is a difference between a Euro-spec and other cars, which seems unlikely, or the oil thermostat is very unreliable?

Do we need another Mazsport kit for this?

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olddragger · 11-20-2009, 10:01 AM

you mean MazMart?
OD

Mazmart · 11-20-2009, 10:36 AM

Alright. The mystery is solved (At least for me anyway). The cooler has flow all the way through but it's bypass is open until certain temps. I examined them with Oldman Engman last night.

Paul.

PhillipM · 11-20-2009, 11:05 AM

Just a flow control thermostat then?

Mazmart · 11-20-2009, 11:07 AM

Quote:

Originally Posted by PhillipM

Just a flow control thermostat then?

Yes sir.

Paul.

olddragger · 11-20-2009, 12:16 PM

it will always have to be a flow control type thermostat. It cannot be like a coolant thermostat in which it only opens at a certain point.
cold oil shock is a real deal.
imho i wish it could rise to at least to 160f in a shorter period of time. it gets to 140F ok but it takes a while to get any hotter.
I have my 2nd radiator unplugged for these cooler months. so coolant temps are not holding it down. coolant gets to 160 F Ok
od

Mazmart · 11-20-2009, 01:03 PM

Quote:

Originally Posted by olddragger

it will always have to be a flow control type thermostat. It cannot be like a coolant thermostat in which it only opens at a certain point.
cold oil shock is a real deal.
imho i wish it could rise to at least to 160f in a shorter period of time. it gets to 140F ok but it takes a while to get any hotter.
I have my 2nd radiator unplugged for these cooler months. so coolant temps are not holding it down. coolant gets to 160 F Ok
od

This is why I can't sell a kit like the 2nd rad setup that you use even though it appears quite effective. I won't do anything that requires a lot of attention or changes with seasons.

Paul.

olddragger · 11-20-2009, 02:28 PM

i like this car and since it is so "huggalicious" (hehe) I dont mind it at all. But, i understand your point and it is very good lodgic.
OD

9krpmrx8 · 11-20-2009, 02:39 PM

Yes this car is definitely not for the non-mechanically inclined. In a weird way though I have come to enjoy the amount of attention it demands.

dannobre · 11-20-2009, 02:50 PM

The PIA with modding cars...at an early stage anyway...is the constant learning what works....

With the older Rotaries..there is a lot of pre-existing, almost cookie cutter things to do to get to a certain endpoint

This engine/platform keeps giving us new surprises at every turn

A lot like the FD's I guess.... When they first came out everyone said that you couldn't get 400HP out of them...and now look at what is common

9krpmrx8 · 11-20-2009, 03:31 PM

That is true. They are not a lot of tried and true things that work really great on the 8 in terms of FI.

madcows · 11-20-2009, 07:12 PM

Quote:

Originally Posted by olddragger

it will always have to be a flow control type thermostat. It cannot be like a coolant thermostat in which it only opens at a certain point.
cold oil shock is a real deal.
imho i wish it could rise to at least to 160f in a shorter period of time. it gets to 140F ok but it takes a while to get any hotter.
I have my 2nd radiator unplugged for these cooler months. so coolant temps are not holding it down. coolant gets to 160 F Ok
od

I know that it's important to reach a certain temp in order for the oil to meet the specs listed on the manufacturer's datasheet. But is this truly a big deal? You obviously would want to run an engine hard with oil temps being cold/warm, but when oil is 20 or 30 degrees below what is spec rated, is this a huge concern?

madcows · 11-20-2009, 07:20 PM

Quote:

Originally Posted by 9krpmrx8

Yes this car is definitely not for the non-mechanically inclined. In a weird way though I have come to enjoy the amount of attention it demands.

I'm with you. In a lot of ways, working on a car that you are really into is very rewarding. You get to know it intimately. And even though it'll break your heart sometimes, it makes up for it at others.

btw, I was just in SA earlier this week, and I saw a red 8 on stone oak pkwy & 281. One thing I learned is that people down there love their 350Zs.