B7 A4 purchase questions

[rborane24]

Looking at a couple B7's to purchase. One being a 2005 and the other a 2006. My question is when did Audi update the cam and cam follower to the revised version? what years? Should I stay away from a early model B7, or is it nothing to worry about as long as the follower was replaced consistently... thanks!

[Hugh@EuropaParts]

As long as it has been replaced accordingly you should be all set...

[rborane24]

As long as it has been replaced accordingly you should be all set...

Thanks! I heard the cam lobes in the early cars were prone to issues so I just wanted some reassurance.

[Axis]

Thanks! I heard the cam lobes in the early cars were prone to issues so I just wanted some reassurance.

Early B7 with the BPG engines didnt have the revised camshaft but they had crown pistons which are forged and from my observation, rarely consume oil. The revised camshaft is 200$ and will take about 3 hours to swap.

[Ringsby4]

Looking at a couple B7's to purchase. One being a 2005 and the other a 2006. My question is when did Audi update the cam and cam follower to the revised version? what years? Should I stay away from a early model B7, or is it nothing to worry about as long as the follower was replaced consistently... thanks!

My car,built Dec 20016,uses minimal oil between changes ie <1 quart per my 5000 mile oil changes.I changed the cam follower at 80K even though it was in serviceable condition.Cam lobe perfect.This is a BWE motor,prob similar to the BPG mentioned but is for Australian market and others.
Its probably asking a bit much for a pre-purchase inspection but if the HPFP is pulled off, the follower and cam lobe could be inspected-maybe at your cost and if its bad,reject the car at no cost to you ?

[Ringsby4]

Early B7 with the BPG engines didnt have the revised camshaft but they had crown pistons which are forged and from my observation, rarely consume oil. The revised camshaft is 200$ and will take about 3 hours to swap.

Interesting,so Axis that implies the later motors didn't have forged pistons ? Mine is early and uses little oil.Makes sense.

[gonemtbiking]

Early B7 with the BPG engines didnt have the revised camshaft but they had crown pistons which are forged and from my observation, rarely consume oil. The revised camshaft is 200$ and will take about 3 hours to swap.

Not all the early B7s had the Rev A camshaft. I have a 2005.5 (Jan 31st 2005 build date) with the Rev B cam.

[shahk62]

[QUOTE=rborane24;11373108]Looking at a couple B7's to purchase. One being a 2005 and the other a 2006. My question is when did Audi update the cam and cam follower to the revised version? what years? Should I stay away from a early model B7, or is it nothing to worry about as long as the follower was replaced consistently... thanks![/QUOTE

I also have the BWE engine on an 2005.5 A4, I did replace my cam follower at about 104000 from what I believe was the stock one and it was in near perfect shape.


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[Copen-cisco]

Good luck finding your B7! My only advice is to find a Avant. ok.

[Ringsby4]

Not all the early B7s had the Rev A camshaft. I have a 2005.5 (Jan 31st 2005 build date) with the Rev B cam.

How can you tell Rev A from Rev B camshaft ?

[gonemtbiking]

How can you tell Rev A from Rev B camshaft ?

You have to remove the vacuum booster pump on the back of the engine, 4 torx screws I believe (pays to have a very stubby tool to get back there). Once you remove the screws and disconnect the hose on the drivers side it will pop right off. Then you can use a mirror or camera to take a look at the cam. 1 Piece is Rev A, 2 piece is Rev B. Here is a pic of my rev B

[gonemtbiking]

Here are the two cams next to each other.

[Charles.waite]

Not all the early B7s had the Rev A camshaft. I have a 2005.5 (Jan 31st 2005 build date) with the Rev B cam.

yours was replaced then. The revised cam wasn't factory installed in B7s until midway through the 2007 model year.

[gonemtbiking]

yours was replaced then. The revised cam wasn't factory installed in B7s until midway through the 2007 model year.

There are a lot of people on this thread with 05/06 build dates with rev B cams.

I would highly doubt that mine was replaced without me knowing about it, the previous owner kept every receipt he ever spend on the car from the window tints at 30 miles, every oil change, tranny replacement, windshield wipers, but no mention of cam shaft replacement.

[Ringsby4]

Here are the two cams next to each other.

Great info,thank you.I think when you say, 2 piece,you are referring to the disk/plate that sits in what looks like a rebate for Rev 2,whereas Rev 1 doesn't have that disk ,Yes ?

[Peter.dupuis]

i have an early 06 and the dealership replaced it back in 09 as a recall when i took it in for yearly maintenance but anyways good luck!

[gonemtbiking]

Great info,thank you.I think when you say, 2 piece,you are referring to the disk/plate that sits in what looks like a rebate for Rev 2,whereas Rev 1 doesn't have that disk ,Yes ?

Correct, rev B is actually 2 pieces. In the picture side by side rev B is on the right. If you are unsure, just take a picture of it and post in on here.


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[Ringsby4]

Correct, rev B is actually 2 pieces. In the picture side by side rev B is on the right. If you are unsure, just take a picture of it and post in on here.


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Appreciated again GMB,I'm sure I will be okay with the identification I have just never poked into that rear end of the engine-maybe thankfully ! In about 3 months I intend pulling intake off and soda blasting carbon off,installing new upgrade fuel pump and regulator valve( sitting patiently in parts locker),new thermostat and coolant flange at the aforesaid rear end,maybe that's my chance for a quick look while everything's off.Its my wife's daily but we will pull it off the road for a week to do this and maybe more....

[Axis]

yours was replaced then. The revised cam wasn't factory installed in B7s until midway through the 2007 model year.

Qft.

[Ringsby4]

Looking at a couple B7's to purchase. One being a 2005 and the other a 2006. My question is when did Audi update the cam and cam follower to the revised version? what years? Should I stay away from a early model B7, or is it nothing to worry about as long as the follower was replaced consistently... thanks!

Good Luck,sorry,threads are easy to get derailed but I sincerely hope you get an A4 B7.One amazing car,The best looking body,an awesome powerlplant and a whole lot of help here.
And a word of advice,yes maybe Avant ( style thing IMO ),BUT defin. Quattro and preferably Manual 6 speed,a joy of a gearbox and can control the Quattro drive perfectly,anything else is a compromise...

[audihere06]

My BPG consumed absolutely no oil at all between 7500 mile oil changes.


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[Okedokey]

My BPG consumed absolutely no oil at all between 7500 mile oil changes.


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Ditto.

[Ringsby4]

My BPG consumed absolutely no oil at all between 7500 mile oil changes.


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Some B7's don't,do you have a catch can ?
Every oil change I mop up about 250ml from my upstream SMIC ( your US passenger side ) and some of the rest of my useage ends up all the way to the intake valves and into the CC,its a fact of the crappy OEM PCV system designed to conform with various regulated emissions standards.If mine is getting past the rings or down this route,I wouldn't know...

[aluthman]

My BPG consumed absolutely no oil at all between 7500 mile oil changes.


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Same here. I fucked that all up when I built the engine and changed to JE pistons though. New engine is back to BPG slugs, although they have been milled down.

[Ringsby4]

Ditto.

Hi mate,you too ? Interesting.Most cars I have owned ( lots ) used virtually no oil between changes,save for the few S$#t heaps I drove when younger...
I'm not complaining about my minimal oil useage but when I pull the intake man.off,part of the explanation will be obvious.

[audihere06]

Some B7's don't,do you have a catch can ?
Every oil change I mop up about 250ml from my upstream SMIC ( your US passenger side ) and some of the rest of my useage ends up all the way to the intake valves and into the CC,its a fact of the crappy OEM PCV system designed to conform with various regulated emissions standards.If mine is getting past the rings or down this route,I wouldn't know...

Yes i have an 034 catch can but there's usually nothing in it but water. And my valves when cleaned were very clean anyway. No gunky looking wet carbon like a lot of pictures show, just hard dry carbon. Even with an oil leak i had no change on the dipstick.


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[Ringsby4]

Some B7's don't,do you have a catch can ?
Every oil change I mop up about 250ml from my upstream SMIC ( your US passenger side ) and some of the rest of my useage ends up all the way to the intake valves and into the CC,its a fact of the crappy OEM PCV system designed to conform with various regulated emissions standards.If mine is getting past the rings or down this route,I wouldn't know...

I really would like to rid myself of that PCV system,but never have get a clear direction from AZ,ppl are really polarized for whats best leaving the reader confused-there have been threads and threads....

[audihere06]

Same here. I fucked that all up when I built the engine and changed to JE pistons though. New engine is back to BPG slugs, although they have been milled down.

I built mine with IE rods and mahle coated race bearings, left the oem forged pistons and put new rings and a fresh hone on the cylinder walls. No oil consumption except when my turbo took a shit the other day. But its all fixed now and breaking in the new turbo with a 400-500 mile conventional oil. Then ill dump it and go back to synthetic.


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[Ringsby4]

Yes i have an 034 catch can but there's usually nothing in it but water. And my valves when cleaned were very clean anyway. No gunky looking wet carbon like a lot of pictures show, just hard dry carbon. Even with an oil leak i had no change on the dipstick.


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Gee,whats your mileage ?

[Ringsby4]

I built mine with IE rods and mahle coated race bearings, left the oem forged pistons and put new rings and a fresh hone on the cylinder walls. No oil consumption except when my turbo took a shit the other day. But its all fixed now and breaking in the new turbo with a 400-500 mile conventional oil. Then ill dump it and go back to synthetic.


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Okay,so what was the mileage before

[Ringsby4]

I built mine with IE rods and mahle coated race bearings, left the oem forged pistons and put new rings and a fresh hone on the cylinder walls. No oil consumption except when my turbo took a shit the other day. But its all fixed now and breaking in the new turbo with a 400-500 mile conventional oil. Then ill dump it and go back to synthetic.


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Sounds good ( except for Turbo ) was build for performance or needed to ( motor screwed ) ?

[audihere06]

I really would like to rid myself of that PCV system,but never have get a clear direction from AZ,ppl are really polarized for whats best leaving the reader confused-there have been threads and threads....

It's really not complicated how the pcv works. Basically with the stock pcv you have the inlet to the valve cover from the crank case, which is "filtered" through the stock oil air separators in the head and sent to two places. One side is pulled by vacuum through the check valve into the intake manifold. (This only works when there is a vacuum in the intake.) The other outlet goes to the other side of the valve cover into the cold side of the turbo. What the catch can block off does is remove the line that goes to the intake manifold deleting the check valve and filtering the blow by. Thats the simplest way i can put it.


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[audihere06]

Sounds good ( except for Turbo ) was build for performance or needed to ( motor screwed ) ?

Eh both sorta. It was all stock other than supporting mods and last February while cruising down the highway, the red oil pressure light of death came on. Balance shafts seizure out of nowhere. So i took the engine to a "friend" of my dads who runs a machine shop, went ahead and bought the 06A oil pump and IE rods and let him put them in. Long story short he put the wrong bearings in it and it blew up after 2 hours of run time. So I bought a new block, went back to stock oil pump and put the rods in it and called it a day. I was at 90k.


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[Ringsby4]

Eh both sorta. It was all stock other than supporting mods and last February while cruising down the highway, the red oil pressure light of death came on. Balance shafts seizure out of nowhere. So i took the engine to a "friend" of my dads who runs a machine shop, went ahead and bought the 06A oil pump and IE rods and let him put them in. Long story short he put the wrong bearings in it and it blew up after 2 hours of run time. So I bought a new block, went back to stock oil pump and put the rods in it and called it a day.


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Oh,thats no good ,what mileage were you at when you lost oil pressure ?

[audihere06]

Oh,thats no good ,what mileage were you at when you lost oil pressure ?

90k


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[Ringsby4]

Oh sorry,90

[Ringsby4]

Yeah,sometimes when everything is going just peachy-shit happens.Particularly with cars,too many moving parts,Ive considered a horse but I suspect they have even more ! ( and go waay too slow )

[Ringsby4]

Eh both sorta. It was all stock other than supporting mods and last February while cruising down the highway, the red oil pressure light of death came on. Balance shafts seizure out of nowhere. So i took the engine to a "friend" of my dads who runs a machine shop, went ahead and bought the 06A oil pump and IE rods and let him put them in. Long story short he put the wrong bearings in it and it blew up after 2 hours of run time. So I bought a new block, went back to stock oil pump and put the rods in it and called it a day. I was at 90k.


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Saving is for you guy's,parts are so cheap compared to over here.I sympathize though ,but just saying

[audihere06]

Saving is for you guy's,parts are so cheap compared to over here.I sympathize though ,but just saying

If anything else happens with this car im afraid it will have to go. Im tempted to go ahead and get rid of it now.


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[Ringsby4]

It's really not complicated how the pcv works. Basically with the stock pcv you have the inlet to the valve cover from the crank case, which is "filtered" through the stock oil air separators in the head and sent to two places. One side is pulled by vacuum through the check valve into the intake manifold. (This only works when there is a vacuum in the intake.) The other outlet goes to the other side of the valve cover into the cold side of the turbo. What the catch can block off does is remove the line that goes to the intake manifold deleting the check valve and filtering the blow by. Thats the simplest way i can put it.


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Yep,I've seen 034's block off,thats a start.....I just bought a new PCV valve setup as mine failed ( not expeno as you know ) but its taking the engine back to square 1.