After noon
Just thought I would add a few engine/turbo details to the pot
As said befor I'm using the 1600xe as a base engine (from the likes of the mid ninties corsa and astra) I will be keeping the head, block and crank from the 1600xe then I will be using the turbo, rods, and pistons from a corsa vxr to turbo charge the 1600xe along with some stand alone management.
The block its self needs to be boared out slightly to accept the vxr pistons (there are 3 different sizes available) and this is the ideal oppertunity to have some under piston oil squirters fitted too. The inlet manifold will need to be a custom job as the 1600xe inlet is useful for nothing and the corsa vxr inlet doesnt fit the 1600xe head (yes I have tried).
Here is the turbo when I did the initial mock up last year when I planned on fitting the engine in my track day nova
As you can see the turbo fits the 1600xe head bang on
There are however a couple of initial complications that need to be solved
The turbo out let is very close to the oil filter mounting location - so I will be relocating the filter
And the original compressor cover is an awkward shape so I will be modifiying it or worst case replacing it.
And here is a sample of the corsa VXR pistons I will be using
And a comparison of the vxr piston and a standard 1600xe piston
The corsa vxr produces 189bhp as standard and I'm looking for ' somthing over 200bhp' so I decided to hybrid the turbo to help me towards my goal
Basically I have gone for a simple compressor wheel upgrade allowing for more lower down and mid range torque and a bit more at the top end as well as the obvious power increase that a higher flowing comp wheel offers.
Another beneficial factor is I could achieved the same power as a standard vxr with lower boost pressure due to the increased ability of the new comp wheel over the standard wheel, or more power at the same boost pressure
On the lathe
Here is the standard vxr compressor wheel, its a fairly new design of wheel with a cut back skirt and is capable of flowing 190 bhp easily and 220 bhp at its upper limits
And here is the upgraded comp wheel - its basically and audi TT 225 bhp wheel so its well capable of flowing 225 bhp and would probably see 300 bhp with higher boost
To put things in to perspective here are the two compressor wheels side by side, vxr on the left TT on the right
Its clear to see by eye how much larger the TT wheel is
To finish the upgrade some material needs to be removed from the back plate to accommodate the new larger TT wheel, the shiny ring in the inner circle is were the material was removed from.
vxr comp wheel
TT comp wheel
Here is the vxr wheel in the compressor cover, you can see how much the compressor cover inlet has been enlarged to fit the TT wheel.
An the new larger TT wheel nice and snug
I also had the compressor cover machine bead polished for good measure and fook me did it come out well!
The polished finish is achieved by the high frequency vibration of stainless steel beads apparently - no messy buffing involved Benn! I did do some prep on the casting before hand although they do turn out well with out and pre at all.
Just thought I would add a few engine/turbo details to the pot
As said befor I'm using the 1600xe as a base engine (from the likes of the mid ninties corsa and astra) I will be keeping the head, block and crank from the 1600xe then I will be using the turbo, rods, and pistons from a corsa vxr to turbo charge the 1600xe along with some stand alone management.
The block its self needs to be boared out slightly to accept the vxr pistons (there are 3 different sizes available) and this is the ideal oppertunity to have some under piston oil squirters fitted too. The inlet manifold will need to be a custom job as the 1600xe inlet is useful for nothing and the corsa vxr inlet doesnt fit the 1600xe head (yes I have tried).
Here is the turbo when I did the initial mock up last year when I planned on fitting the engine in my track day nova
As you can see the turbo fits the 1600xe head bang on
There are however a couple of initial complications that need to be solved
The turbo out let is very close to the oil filter mounting location - so I will be relocating the filter
And the original compressor cover is an awkward shape so I will be modifiying it or worst case replacing it.
And here is a sample of the corsa VXR pistons I will be using
And a comparison of the vxr piston and a standard 1600xe piston
The corsa vxr produces 189bhp as standard and I'm looking for ' somthing over 200bhp' so I decided to hybrid the turbo to help me towards my goal
Basically I have gone for a simple compressor wheel upgrade allowing for more lower down and mid range torque and a bit more at the top end as well as the obvious power increase that a higher flowing comp wheel offers.
Another beneficial factor is I could achieved the same power as a standard vxr with lower boost pressure due to the increased ability of the new comp wheel over the standard wheel, or more power at the same boost pressure
On the lathe
Here is the standard vxr compressor wheel, its a fairly new design of wheel with a cut back skirt and is capable of flowing 190 bhp easily and 220 bhp at its upper limits
And here is the upgraded comp wheel - its basically and audi TT 225 bhp wheel so its well capable of flowing 225 bhp and would probably see 300 bhp with higher boost
To put things in to perspective here are the two compressor wheels side by side, vxr on the left TT on the right
Its clear to see by eye how much larger the TT wheel is
To finish the upgrade some material needs to be removed from the back plate to accommodate the new larger TT wheel, the shiny ring in the inner circle is were the material was removed from.
vxr comp wheel
TT comp wheel
Here is the vxr wheel in the compressor cover, you can see how much the compressor cover inlet has been enlarged to fit the TT wheel.
An the new larger TT wheel nice and snug
I also had the compressor cover machine bead polished for good measure and fook me did it come out well!
The polished finish is achieved by the high frequency vibration of stainless steel beads apparently - no messy buffing involved Benn! I did do some prep on the casting before hand although they do turn out well with out and pre at all.