Turbo Stockers

[art leong]

Originally Posted by Marc Kinton

again, i don't mean to hijack this thread...if u want me to start a new one i will. Tested Saturday and got some additional info. Car went it's best pass so we're apparently making strides.

60' 1.714
660' 8.19 @ 81.12mph

two-step @ 3000 rpm gettin 9lbs boost at the starting line; fuel pressure turned up to 50lbs. shifting at 5800

Think we blew a head gasket but haven't taken it apart yet.

Seems the battery disconnect was helpful but still want to get more data to confirm it. car was pretty dang consistent all day.

Thoughts???

You need to get an EGT gauge. And tune with that.
The head gasket is usually the first to go, but the valves and the pistons are usually soon to follow

[Dennis P Chapman]

Ford SVO use to make turbo hp head gasket for your motor.

[Marc Kinton]

We have an EGT. What numbers shall I get you from that. I will look into the SVO gasket.

[FED 387]

Isnt the correct gasket for the SVO
turbo 4cyl FEL PRO- 1035???

Comp 387

[art leong]

Originally Posted by Marc Kinton

We have an EGT. What numbers shall I get you from that. I will look into the SVO gasket.

My best runs were at just below 1800 degrees at the finish line, with the probe about 1 inch from the head.
I just adjusted the fuel pressure to get the egt number I wanted

[Marc Kinton]

Originally Posted by art leong

My best runs were at just below 1800 degrees at the finish line, with the probe about 1 inch from the head.
I just adjusted the fuel pressure to get the egt number I wanted

I assume that lowering the fuel pressure lowers the egt? and vice versa

[art leong]

Originally Posted by Marc Kinton

I assume that lowering the fuel pressure lowers the egt? and vice versa

Nope just the opposite. Bring the fuel down it raises EGT's. Put more fuel in it lowers them.

[Rob Lloyd]

Bringing this one back up because it's time for a new turbo.

So, what exactly does the turbo rule mean? The housing can be 2mm bigger than the max allowed turbocharger size? What size? The wheel OD? Where is that size published? No mention of the wheel size, so I assume it has to be the max allowed size - whatever that is.

All of my turbos are used and slightly worn, but I honestly don't know what the stock size is supposed to be. It would be nice to know exactly how much these turbine wheels are worn down. And, whether or not I should invest in a new one.

Art - do you have the stock specs for the Mitsubishi turbo used on the TD's?

[art leong]

Originally Posted by Marc Kinton

I assume that lowering the fuel pressure lowers the egt? and vice versa

Just saw this post raising fuel lowers EGT lowering it raises EGT.