AGU rebuild

[con81]

Hi i want to rebuild an AGU unit for the big port benefits with uprated rods to replace the tired BAM motor in my LCR but i have a few questions:

can i disconnect/bypass the vvt from the ECU as i would like to get rid of it as its of no real benefit when the car is de-catted?

what pistons does the AGU use are they the same forged items as in the BAM?

any help would be appreciated thanks.

 

[ReDBull]

Keep the VVT.
The higher CR is an Advantage, it's the way I'm going.

 

[con81]

keep the VVT? Ok but why, what are the advantages?

 

[Pommeh]

Use the bam block with the agu head, just buy forged rods for the bam.

 

[ReDBull]

Use the AGU pistons not the BAM ones. If you don't use them I'll buy them off you.

 

[Pommeh]

Why? Bam has better compression. Bam bottom end is much better for power as long as you buy forged rods

 

[JDUB 20V]

Rebuild complete AGU and stick all BAM ancillaries on including VVT - VVT is good for the extra horses when MAP time comes.. Which inlet manifold do you plan to use?

 

[ReDBull]

Why? Bam has better compression. Bam bottom end is much better for power as long as you buy forged rods

The high CR of the AGU helps make more power and improves off boost drivability. This is prove as most true 300 BHP 1.8t run them.

It's a myth that the BAM bottom end is stronger. It's not.

AGU is the way forward.

 

[JDUB 20V]

It's a myth that the BAM bottom end is stronger. It's not.

AGU is the way forward.

/\ What this man says, BAM lumps demand stupid money but AGU is the ideal base to start from

 

[Pommeh]

The high CR of the AGU helps make more power and improves off boost drivability. This is prove as most true 300 BHP 1.8t run them.

It's a myth that the BAM bottom end is stronger. It's not.

AGU is the way forward.

Im lost here... high cr gives more power on boost? How? I know its more down to the tume than anything but in every car that has a turbo low cr is desired, why would it be different with the 1.8t?

 

[Ronin225]

Supposedly the BAM block casting has additional webbing for strength so the block maybe better
I have an APY block I intend to compare it to BAM when I do my rebuild

 

[ReDBull]

Im lost here... high cr gives more power on boost? How? I know its more down to the tume than anything but in every car that has a turbo low cr is desired, why would it be different with the 1.8t?

The high CR as it says compresses the mixture further than a lower CR. Which means less boost pressure is needed to produce the same BHP. Less boost means less heat and allows more advance on the timing. At least that's how I've read it.
This is tried and tested Bill runs a high CR engine in the Badger wagon. If you don't believe me have a search of the inter net. Low CR is old school I'd guess the advances in ECUs play a part.

 

[Pommeh]

If bill does it then it must work. Rather annoyed now though as I purchased 83mm pistons with a 9:1 for my stroker when I could have had upto 10.5:1