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10th October 2016, 12:13 PM
#21
Originally Posted by
Crimpy
I don't get why overboost can be an issue after fitting the plate. Anyone care to enlighten me?
What ET has stated, but my thought is because now the intake is getting 100% cleaner and cooler air, not a mix of dirty hot exhaust gas aswell, the air can be compressed more, being cooler, hence slightly over boosting now due to a higher compression rate in the intake system.
I'm no mechanic, but that just made sense to me. Cooler air can be compressed more....
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10th October 2016 12:13 PM
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10th October 2016, 07:31 PM
#22
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10th October 2016, 07:50 PM
#23
Originally Posted by
growler2058
I've had zero issues with blocking plate alone
Yeah it seems to be the luck of the draw with the CRD's. Many have zero issues, many have issues.
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growler2058 (10th October 2016)
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11th October 2016, 09:16 AM
#24
Hey guys. Once I loosen the nuts from the EGR inlet can you just nudge it back to slide in plate or do I need to remove mounting brackets etc.? How long should the process take?
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11th October 2016, 04:58 PM
#25
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BigRAWesty (11th October 2016)
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16th October 2016, 05:00 PM
#26
Advanced
Hi guys just reading this thread for a crd you dont need the dawes and needle valves? Just blocking the egr should be ok. I have a boost gauge in. Sorry if its a dumb question still learning about this stuff
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16th October 2016, 06:00 PM
#27
SPAMINATOR
Originally Posted by
Apples
Hi guys just reading this thread for a crd you dont need the dawes and needle valves? Just blocking the egr should be ok. I have a boost gauge in. Sorry if its a dumb question still learning about this stuff
Its a suck it and see. Just the blanking plate 9/10 youll be fine. Throw on a bigger exhaust and you may well have issues
IF YA DONT GET STUCK YA AINT TRYIN HARD ENOUGH........OR YA TOOK THE CHICKEN TRACK
WARNING: TOWBALLS USED WITH SNATCHSTRAPS DO KILL!!
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16th October 2016, 06:10 PM
#28
I am he, fear me
Originally Posted by
mudski
snip... but my thought is because now the intake is getting 100% cleaner and cooler air, not a mix of dirty hot exhaust gas aswell, the air can be compressed more, being cooler, hence slightly over boosting now due to a higher compression rate in the intake system.
Hmm... not sure about that.
Agree you can compress colder air for more oxygen but don't think that is what is producing the boost spikes in this case.
Mainly based on the fact that the EGR block doesn't change the air temp in the intake/turbo/intercooler
Only two things compress air, the Turbo and the Pistons.
The pistons are post-EGR block so the ECU/Scangauge/Boost gauge or whatever can't see that pressure.
That pretty much means the only way the ECU or gauges can 'see' an overboost is if the Turbo supplies too much pressure or if you get a back pressure.
I would be tempted to rule out back pressure as the EGR block is now a constant.
Sooo... I reckon the ECU is seeing the inputs (throttle, engine load, air flow, air temp, boost pressure) and commanding increased vane angle and closing the EGR valve it thinks is open and/or (depending on what is happening) has trouble backing off the vane angle to reduce the boost when it wants the EGR to open.
Bottom line is it doesn't matter too much either way as no EGR is awesome for the engine and shithouse for the planet :-)
Dolphins are so smart that within a few weeks of captivity, they can train people to stand on the very edge of the pool and throw them fish.
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16th October 2016, 07:36 PM
#29
Advanced
Thanks guys, is that with a hole in the blanking plate nor no hole. Sorry for this just want to get it right
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16th October 2016, 07:45 PM
#30
SPAMINATOR
Originally Posted by
Apples
Thanks guys, is that with a hole in the blanking plate nor no hole. Sorry for this just want to get it right
Mine is no hole
IF YA DONT GET STUCK YA AINT TRYIN HARD ENOUGH........OR YA TOOK THE CHICKEN TRACK
WARNING: TOWBALLS USED WITH SNATCHSTRAPS DO KILL!!
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The Following User Says Thank You to growler2058 For This Useful Post:
Apples (16th October 2016)