OST-042-01: The Dubai Deception

[oldeskewltoy]

"Workin" the exhaust side... 3 down... 1 to go





more to come......

[oldeskewltoy]

The head is now ready for its valve job.......




more to come........

[ditn]

(09-09-2016 07:21 PM)oldeskewltoy Wrote:  

oldeskewltoy Wrote:using ARP studs

Since I'm assembling this engine with ARP head studs, the oil passage is over-drilled to accommodate the thicker bolts




more to come.......

This should be stickied,i keep telling people but they dont believe it

[oldeskewltoy]

(09-15-2016 09:29 PM)ditn Wrote:  This should be stickied,i keep telling people but they dont believe it

I've been informed from a big time 4AGE parts seller that the new version, are .6mm thinner then the old ones (from 10mm down to 9.4mm)....and so the passage no longer NEEDS to be drilled......

but that isn't the only reason to drill the passage... BUT the KEY is the partial drilling... meaning you drill ONLY to the oil port. Why?? Because by leaving the top undrilled you provide a a gap that can't get blocked no matter the expansion/contraction, no matter the size. In essence by only drilling to the port you are mimicking the head bolts shankdown section which do to its design also CAN'T block the oil port..........

[oldeskewltoy]

So the head is back in my hands, the delay caused by the 2016 SCCA runoffs, and the shop closing that week to support their clients @ the runoffs.


This head is uncut @ 4.566"





and once the valves are lapped into their new seats, chamber volumes can be assessed




3 @ 36cc, and 1 @ 35.9........




1/10 of a cc is pretty close, but because this is an OS valve head, some additional de-shrouding is necessary. De-shrouding is a bit different on an OS valve head then it is on a std valve head. To better utilize the larger valves, a bit more room is needed around the valves....



Using Nissan SR20 valves to protect the new OS 4AG seats, you can see on the right the bit of extra work performed. If you are sharp of eye, you can see the scribe marks to mark out the exact placement of the gasket so I know just how far I can work the corners.....




more to come.........

[oldeskewltoy]

Assembled short block....





more to come......

[oldeskewltoy]

A peak inside before sealing it up.



adding brand new hardware to a brand new Toyota oil pump, the short block is now finished, just waiting for the finished head.



more to come....

[oldeskewltoy]

from another forum Wrote:I've been meaning to ask, why is this build 042-01? Customer has two builds going on at once?

Thank you..... I was wondering if anyone would even ask........



The -01 represents the first built block I've been commissioned to build. Although not my first "A" block build, as I have more than a 1/2 dozen "A" builds under my belt, this one was built as a package to go along with the head build - OST-042. So it carries a dual designation, one number in the head, and another number in the block.



more to come....

[oldeskewltoy]

Ready for re-assembly.......





more to come....

[oldeskewltoy]

The head is assembled, I'm waiting on new valve shims...

Working on some of the logistics of getting this overseas....


build a cradle.... wood glue and screws...




and fitting said cradle into engine shipping case.... the 2x6s are screwed to the sheet of OSB, the blue ratchet straps will hold the engine to the cradle, and the box






more to come....