Little advise please

[jedi201751]

good evening fellow members.
I have an ongoing project that is fitting a turbo from a Subaru to a Triumph 1500 engine to be fitted in to light weight kit car, I am finding it a little difficult to find good technical information on such a project.
I will be setting it up as a blow through but the technical information I am looking for is how much to have taken off the tops of the pistons or try going with 3 head gaskets
because it is quiet a large turbo I plan to use.
if any one has any advise it would be very greatfully acepted.
thanks
Mike

 

[TCJBOLDIE]

The first things that comes to mind is forget it.

I would suspect that the rods will bend and the pistons will melt.

I suggest that if you intend it to last then a forged bottom end with a Cometic head gasket and ARP head studs and MPI plus a programmable EMS/computer is a must as the blow thru turbo system is from the dark ages and will present tuning difficulties.

Machining /weakening the piston crowns in a boosted engine to lower the compression is only asking for trouble.

And 3 head gaskets

Sorry to rain on your project but the above is my 2 cents worth.

 

[thexav]

I doubt the 1500 engine will push enough exhaust gases to properly drive the turbo. A remote turbo setup might work better for you but you'll need to dramatically drop the compression ratio of the engine.

What is the current compression ratio?

 

[TCJBOLDIE]

Is the motor an old OHV out of a Herald or Spitfire and IF so then no matter what you do to it I doubt that it will be as reliable/fast as say a stock 3 cylinder 12 valve twin cam turbo Japanese motor.