OST-051: One Lap of America

[oldeskewltoy]

I have a new client.....






and he is building a car (AW11 MR2) to compete in..........


His car build (13 pages deep): https://grassrootsmotorsports.com/forum ... 821/page1/


and so work begins.....


... on the intake side





.... and the exhaust side





more to come.....

[oldeskewltoy]

A bit further....



more to come....

[oldeskewltoy]

3 down.....




and finishing with #4... just look at how nasty those exhaust seats are.... good thing they are getting a full 3 angle!




more to come.....

[oldeskewltoy]

just look at how nasty those exhaust seats are....

Not any more... and you can now see the "chunk" taken from the head.....







more to come.....

[Rogue-AE95]

That's a lot to cut... was it that bad? Seems like there won't be much left to cut for a rebuild.

[oldeskewltoy]

That's a lot to cut... was it that bad? Seems like there won't be much left to cut for a rebuild.

"bad" - no... there is a small flow advantage when the head is cut to the point that the chambers edge meets the "squish" zone smoothly. In addition a smaller chamber allows for a better piston design since the chambers is now smaller

As to how much more this head can/could be cut... way back in 2010....... http://www.hachiroku.net/forums/forum/m ... he-rockies - Cliff Notes for those that don't want to read up... 32cc chambers

This head has at least one more .004-.006" cut left...


more to come....

[oldeskewltoy]

adding an oil drain to the intake side of the head....




more to come....

[oldeskewltoy]

and from a different perspective.....




more to come....

[Rogue-AE95]

Nicely done!

[oldeskewltoy]

Nicely done!

ty...



all finished, and re-assembled, with 7 of 8 intakes valves now set @ .006", and one @ .007", and on the exhaust side there are 7 valves now @ .008", and one @ .009"

Packed with dummy cams to keep the shims in place, as well as not having any valves exposed do to having the real cams in