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The mkiv Supra Owners Club

EGR mod


Keith C

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I'm full of questions today. Well, full of something... ;)

 

Anyway - I *know* my EGR is leaking. As I see it, I have two options:

 

1) Attempt to fix it

 

2) Disable it

 

If I go for 1, which is the bit most likely to *be* leaking?

 

If I go for 2, do I have to go for the single or twin plate removal? I'm not bothered about physically removing the whole setup, but I would like it to stop leaking.

 

Also, what are the pros/cons of disabling it?

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Guest Martin F

Have you checked the hoses around the EGR ? They are the most likely culprits for leaks.

 

I can't remember the advantages of the twin plate removal over the single, but suffice to say the lower one is a bitch to fit with engine and manifold all in place.

 

Pro's - lower inlet temps on cylinders no5 & 6 when on light throttle, and also less chance of an inlet leak :D

 

Cons - Higher emissions.

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Hmm, think I'll try fixing it first. Supraforums indicates it could be the easiest to get to hose, so I'll buy a length of hose and swap them all until it goes away, and if it doesn't, I'll remove the whole damn thing :D

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off powerhouse racing site.

there does not look much to them. something you could make for not much???

 

 

 

PHR EGR Block Off Plates. The factory EGR system was designed to assist in emissions reduction by allowing hot exhaust gases to be recirculated into the cool incoming air within the intake manifold. While this was a great idea from an emissions standpoint, it has horrible effects on a turbocharged vehicle that relies on cool charge air temperatures to make horsepower. Even removing the vacuum hose from the EGR valve does not stop this process, as exhaust backpressure still manages to open the valve under boost. Stop these hot gasses from ruining your cool air the right way, by installing a pair of PHR EGR block-off plates! Machined from 1/8” 6061 Aluminum and hand-polished for a show-quality appearance. Accept no cheap imitations cut from thin material that warps and leaks, go with the best! Highly recommended! Price: $90.00 pair. (2nd generation design)

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Andrew Dunk Shaw has my EGR blanking plates at the moment and was looking to copy them, but needed to know there would be enough interest in a batch of them. I believe they retail for £40 from the US, Andrew was talking about £20 to £25 for his versions.

 

JB

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  • 1 year later...

http://www.powerhouseracing.com/catalog/supratt/blockoff.jpg

 

PHR EGR Block Off Plates. The factory EGR system was designed to assist in emissions reduction by allowing hot exhaust gases to be recirculated into the cool incoming air within the intake manifold. While this was a great idea from an emissions standpoint, it has horrible effects on a turbocharged vehicle that relies on cool charge air temperatures to make horsepower. Even removing the vacuum hose from the EGR valve does not stop this process, as exhaust backpressure still manages to open the valve under boost. Stop these hot gasses from ruining your cool air the right way, by installing a pair of PHR EGR block-off plates! Machined from 1/8” 6061 Aluminum and hand-polished for a show-quality appearance. Accept no cheap imitations cut from thin material that warps and leaks, go with the best! Highly recommended! Price: $90.00 pair. (2nd generation design)

 

http://www.powerhouseracing.com/supratt_eng.shtml

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I do a laser cut, hard anodized pair of plates for £35 quid the pair, no VAT to pay, P&P 2 quid See Pics Here These plates ahve a removeable blanking screw to fit UK and US systems. I actually sell the things to the Yanks... ;)

 

In stock now, quantity discount.

 

What is the removable screw used for Chris, is that a jspec requirement?

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I do a laser cut, hard anodized pair of plates for £35 quid the pair, no VAT to pay, P&P 2 quid See Pics Here These plates ahve a removeable blanking screw to fit UK and US systems. I actually sell the things to the Yanks... ;)

 

In stock now, quantity discount.

 

i completely removed my egr the other day using chris's plates. took about 1.5 hours and a few scraped knuckles but easily done. i done everything by feel and didnt have to remove anything to gain access to the bolts

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  • 1 year later...
http://www.powerhouseracing.com/catalog/supratt/blockoff.jpg

 

PHR EGR Block Off Plates. The factory EGR system was designed to assist in emissions reduction by allowing hot exhaust gases to be recirculated into the cool incoming air within the intake manifold. While this was a great idea from an emissions standpoint, it has horrible effects on a turbocharged vehicle that relies on cool charge air temperatures to make horsepower. Even removing the vacuum hose from the EGR valve does not stop this process, as exhaust backpressure still manages to open the valve under boost. Stop these hot gasses from ruining your cool air the right way, by installing a pair of PHR EGR block-off plates! Machined from 1/8” 6061 Aluminum and hand-polished for a show-quality appearance. Accept no cheap imitations cut from thin material that warps and leaks, go with the best! Highly recommended! Price: $90.00 pair. (2nd generation design)

 

http://www.powerhouseracing.com/supratt_eng.shtml

 

I think posting pictures and links directly from the PHR website and talking openly about copying someone elses design is in bad taste personally.... If you guys want a few sets of EGR plates, let me know and we'll do a group buy for far less than retail. There have been countless copies of this design, and although its easy to copy and make up, still in bad taste to actually openly use our pics for such a purpose IMO.

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I think posting pictures and links directly from the PHR website and talking openly about copying someone elses design is in bad taste personally.... If you guys want a few sets of EGR plates, let me know and we'll do a group buy for far less than retail. There have been countless copies of this design, and although its easy to copy and make up, still in bad taste to actually openly use our pics for such a purpose IMO.

This was a year ago. dont think a group buy will get much interest over here as most cars are jap imports and dont have the EGR anyways. Good to see youve joined up on here Jarrett

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I think posting pictures and links directly from the PHR website and talking openly about copying someone elses design is in bad taste personally.

 

I don't. It's a bit of metal (hardly some complex design we're copying here), if someone can make them cheaper for us then I'm all for it.

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This was a year ago. dont think a group buy will get much interest over here as most cars are jap imports and dont have the EGR anyways. Good to see youve joined up on here Jarrett

 

Do none of the J Spec cars have EGR?

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This was a year ago. dont think a group buy will get much interest over here as most cars are jap imports and dont have the EGR anyways. Good to see youve joined up on here Jarrett

 

I know it was old, I did a search and this was the first to pop up. I was quite amazed folks had quoted our website directly for this purpose! But its old news now, so thanks for the welcome!

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I don't. It's a bit of metal (hardly some complex design we're copying here), if someone can make them cheaper for us then I'm all for it.

 

I dont necessarily have an issue with anyone copying them, its been done 100 times already in the US. I just had an issue with quoting text and pictures directly from the PHR website to aid in the copying. Its all good mate..

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Believe it or not EGR actually has a positive effect on helping to reduce detonation! if i can find the link to the article I'll post it up.

 

Well, it slows the combustion process down to limit the production of NOx emissions, so I can see the logic in that.

 

Actually, to run fully internal EGR I think you need a phaser unit on the exhaust cam rather than the intake (or as well as the intake). The VVTi is of course intake phaser only.

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