How to remove burnt oil stains on SS exhaust extractor

[parakey]

Note sure about the better flow part but mine isn't cast iron. This is what the original looks like.

 

[sanekit]

Note sure about the better flow part but mine isn't cast iron. This is what the original looks like.

That's the hotbits one or what?

 

[parakey]

That's the hotbits one or what?

I had the Hotbit's header destroyed to prevent resale to unsuspecting buyers.

The one in the pic is the original Proton header for Wira 1.8 DOHC

 

[sanekit]

I had the Hotbit's header destroyed to prevent resale to unsuspecting buyers.

The one in the pic is the original Proton header for Wira 1.8 DOHC

I see. My halfcut came with a cast iron one. Then i change to mivec cast iron.

 

[parakey]

Does your car have a 02 sensor? There's no port for the sensor on this header set

 

[sanekit]

Does your car have a 02 sensor? There's no port for the sensor on this header set

Mine got. Maybe coz it's a single cam auto? That's the mivec cast iron headers

 

[parakey]

Mine got. Maybe coz it's a single cam auto? That's the mivec cast iron headers

Mine was the original batch of C99 limited edition. No 02 sensor because it was never meant to be environment friendly. Not meant for export. Later models came with catalytic converters and 02 sensors.

 

[parakey]

@RENESIS, the original header also not stainless steel. Used for 20 years. No leaks or cracks. I had it replaced because I find the 4-2-1 tubes to be too short.

 

[RENESIS VIII]

Here's a pic of the header I replaced recently. Since my car doesn't have a 02 sensor, they welded the port shut.

Paid 250 for it. How much did it cost you, RENESIS?

The Hotbit's unit was 1-piece. Had difficulty removing it. I asked them to cut it into 2. This is also to prevent the old header from being re-patched and later re-sold.

Mine cost RM265. From the labeling, I found out that it is from a Malacca manufacturer called Marco. Apparently it is an old brand.

 

[RENESIS VIII]

Here's a pic of the header I replaced recently. Since my car doesn't have a 02 sensor, they welded the port shut.

Paid 250 for it. How much did it cost you, RENESIS?

The Hotbit's unit was 1-piece. Had difficulty removing it. I asked them to cut it into 2. This is also to prevent the old header from being re-patched and later re-sold.

@RENESIS, the original header also not stainless steel. Used for 20 years. No leaks or cracks

After removing my original 18 years old manifold, I notice there is a fine crack over there. Hmm, I guess my change to 4-2-1 is right on time.

 

[parakey]

Your engine bay has a lots of space between the header and the radiator fan. Can put one of those fancy extractors with long runners. Mine doesnt have such space

 

[RENESIS VIII]

Your engine bay has a lots of space between the header and the radiator fan. Can put one of those fancy extractors with long runners. Mine doesnt have such space

The fan in front of the header is actually the aircond fan. Even with this aftermarket header, the distance between it and the fan is still similar with the stock header+heat shield.

Your 4G9 engine looks quite cramped. Are you worried about the heat from your header damaging your fan?

 

[parakey]

Are you worried about the heat from your header damaging your fan?

That actually happened once before. Melted one of the plastic legs off the bracket.

 

[RENESIS VIII]

That actually happened once before. Melted one of the plastic legs off the bracket.

So, did you change to a different type of fan after that?

 

[parakey]

It was a one-off incident. Was caught in moderate jam at Pudu. Suddenly temperature shot up. Found a place to park and opened the bonnet. Top legs was detached from the main frame and the fan assembly fell over & was resting against the headers. Luckily there was a spare parts shop nearby. Walked over and bought a standard proton unit. Been many years since that and the replacement fan hasn't failed yet.

For an NA engine, there hasn't been a need to upgrade radiator/fan assembly. 4G93 DOHC heats up from cold start really fast. I believe this engine builds up heat easily but using Toyota coolant, engine temperature has been stable even when revved hard up Genting. Thus far, I only had radiator top panel replaced once. I believe turbo units may require better cooling.

Edit: Sanekit appears to have red colored aftermarket radiator. Looks slimmer compared to mine.

Edit2 Oops. The red color is not a radiator :stupid:

 

[RENESIS VIII]

It was a one-off incident. Was caught in moderate jam at Pudu. Suddenly temperature shot up. Found a place to park and opened the bonnet. Top legs was detached from the main frame and the fan assembly fell over & was resting against the headers. Luckily there was a spare parts shop nearby. Walked over and bought a standard proton unit. Been many years since that and the replacement fan hasn't failed yet.

For an NA engine, there hasn't been a need to upgrade radiator/fan assembly. 4G93 DOHC heats up from cold start really fast. I believe this engine builds up heat easily but using Toyota coolant, engine temperature has been stable even when revved hard up Genting. Thus far, I only had radiator top panel replaced once. I believe turbo units may require better cooling.

Edit: Sanekit appears to have red colored aftermarket radiator. Looks slimmer compared to mine.

Edit2 Oops. The red color is not a radiator :stupid:

Is the melted fan a standard Proton unit or aftermarket? Is it because it melt due to top legs detached and the fan fell over? Or the heat broke the top legs?

 

[parakey]

Is the melted fan a standard Proton unit or aftermarket? Is it because it melt due to top legs detached and the fan fell over? Or the heat broke the top legs?

It was a standard proton fan. Came with the car when it was new. Don't think I can blame it on the heat of the header. The replacement fan has been in use for years without issues. Tbh, I cannot tell how the legs broke off. By the time I opened the bonnet, it was melting against the headers. Hard to pry it out since it was stuck.

Are you thinking of upgrading your fan?

 

[RENESIS VIII]

It was a standard proton fan. Came with the car when it was new. Don't think I can blame it on the heat of the header. The replacement fan has been in use for years without issues. Tbh, I cannot tell how the legs broke off. By the time I opened the bonnet, it was melting against the headers. Hard to pry it out since it was stuck.

Are you thinking of upgrading your fan?

Then maybe your headers should be fine although the gap between them and the fan is quite close. Just that melting incident happened because the legs broke off.

Nope, din't thought of upgrading the fan. But I did consider before of changing to a larger radiator since my original 1.5 manual radiator is half sized instead of full size. But since it is managing the temperature quite well even when I am driving at near 6000rpm in 4th gear, I don't plan to change it now. The most recent temperature problem that I had is due to a stuck thermostat. After that is fixed, temperature is stable.

 

[parakey]

it is managing the temperature quite well even when I am driving at near 6000rpm in 4th gear, I don't plan to change it now.

I support that idea. If it aint broke, dont fix it.

Original comes with a metal plate/shield at the front. I think it's to prevent the air from the fan cooling the headers. Wonder if I should get the exhaust fella to fashion one for me.

 

[sanekit]

That actually happened once before. Melted one of the plastic legs off the bracket.

U need better heatshield.

Edit: Sanekit appears to have red colored aftermarket radiator. Looks slimmer compared to mine.

Edit2 Oops. The red color is not a radiator :stupid:

LOL. Radiator is not there. I'm using double layer long radiator as my car is auto. My headers comes with the stock heat shield.