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Thread: OST-037: Under Pressure
Post: Final assembly..... http://ost.ebeans.ch/albums/userpi...
Final assembly.....

http://ost.ebeans.ch/albums/userpics/10005/normal_assembling_finished_head.jpg

The rocker shafts are set, both bolts torqued to 8.8N-m(78 "/#s)


All assembled, waiting...
2016-03-19 00:16
Thread: OST-037: Under Pressure
Post: Prior to assembly... all the parts, and tools laid out h...
Prior to assembly... all the parts, and tools laid out

http://ost.ebeans.ch/albums/userpics/10005/prior_to_assembly_smller.jpg


Now one of the careful touches I do is when assembly the valve, spr...
2016-03-14 15:37
Thread: OST-037: Under Pressure
Post: 2 weeks..... :rolleyes: So with the new valve job t...
2 weeks..... :rolleyes:


So with the new valve job the numbers didn't improve.... until I added a clay radius at ports edge.

http://ost.ebeans.ch/albums/userpics/10005/normal_head_on_benc...
2016-03-10 22:11
Thread: OST-037: Under Pressure
Post: It was a "wash".... the stock valves flowed very close t...
It was a "wash".... the stock valves flowed very close to the Supertech valves in the ported head. They did flow marginally less, but they were close. What I found out when I checked Supertech ...
2016-02-24 17:58
Thread: OST-037: Under Pressure
Post: It was a "wash".... the stock valves flowed very close t...
It was a "wash".... the stock valves flowed very close to the Supertech valves in the ported head. They did flow marginally less, but they were close. What I found out when I checked Supertech ...
2016-02-24 17:58
Thread: OST-037: Under Pressure
Post: It was a "wash".... the stock valves flowed very close t...
It was a "wash".... the stock valves flowed very close to the Supertech valves in the ported head. They did flow marginally less, but they were close. What I found out when I checked Supertech ...
2016-02-24 17:58
Thread: OST-037: Under Pressure
Post: OMFG...... 2 weeks to get valve seats, and install them....
OMFG...... 2 weeks to get valve seats, and install them...... :banghead:

anyway.... the head is back in my possession, and the new seats has been opened to the size of all the other seats... the...
2016-02-19 23:17
Thread: OST-037: Under Pressure
Post: small bit of explanation.... the above gif was taken fr...
small bit of explanation.... the above gif was taken from a Brit TV show called, "Are You Being Served", comedy about department store employees. The gif is from an episode where that mannequin ...
2016-01-27 22:37
Thread: OST-037: Under Pressure
Post: our specs.... http://ost.ebeans.ch/albums/userpics/10...
our specs....

http://ost.ebeans.ch/albums/userpics/10005/SR20VE_valve_guide_specs.jpg

of course in millimeters - so we must convert

.04mm = .00157"
.073mm = .00287"

So tight guides w...
2015-12-21 19:14
Thread: OST-037: Under Pressure
Post: I had to look this up.... still unsure, unless it is a s...
I had to look this up.... still unsure, unless it is a synonym for cyl volume matching.... but yes, with new valves, and machine work to come, I may need to adjust chamber volumes.

Speaking...
2015-12-05 21:15
Thread: OST-037: Under Pressure
Post: nothing wrong with them.... there was some wear (to be e...
nothing wrong with them.... there was some wear (to be expected)... the new exhaust valve just moves the tolerance back to the middle of the spec


Boy... I'm having a tough time communicating ...
2015-12-02 04:48
Thread: OST-037: Under Pressure
Post: Well.... as I've already told my client.... I've got som...
Well.... as I've already told my client.... I've got some good news.... and some bad news.

First the bad news... #1's valve seats will be replaced on my dime :facepalm: between the new guides...
2016-01-29 21:51
Thread: OST-037: Under Pressure
Post: small bit of explanation.... the above gif was taken fr...
small bit of explanation.... the above gif was taken from a Brit TV show called, "Are You Being Served", comedy about department store employees. The gif is from an episode where that mannequin ...
2016-01-27 22:37
Thread: OST-037: Under Pressure
Post: small bit of explanation.... the above gif was taken fr...
small bit of explanation.... the above gif was taken from a Brit TV show called, "Are You Being Served", comedy about department store employees. The gif is from an episode where that mannequin ...
2016-01-27 22:37
Thread: OST-037: Under Pressure
Post: something not often seen... call it piston's eye view.......
something not often seen... call it piston's eye view......

http://ost.ebeans.ch/albums/userpics/10005/flow_adapter_on_head_2_panel.jpg


above is my 86mm flow adapter laid over cyl #1....

...
2016-01-21 16:57
Thread: OST-037: Under Pressure
Post: something not often seen... call it piston's eye view.......
something not often seen... call it piston's eye view......

http://ost.ebeans.ch/albums/userpics/10005/flow_adapter_on_head_2_panel.jpg


above is my 86mm flow adapter laid over cyl #1....

...
2016-01-21 16:57
Thread: OST-037: Under Pressure
Post: http://ost.ebeans.ch/albums/userpics/10005/blending_intak...
http://ost.ebeans.ch/albums/userpics/10005/blending_intake_seat_2_panel.jpg

the top panel reveals a small "high spot", so breaking out the 25 micron (about 800 grit) sanding band I GENTLY blend ...
2016-01-21 00:47
Thread: OST-037: Under Pressure
Post: FINALLY.... http://ost.ebeans.ch/albums/userpics/100...
FINALLY....

http://ost.ebeans.ch/albums/userpics/10005/after_valve_job_____.jpg

one of the negatives to having an "in" at a race shop... sometimes when they have their own clients work... ...
2016-01-20 20:02
Thread: OST-037: Under Pressure
Post: FINALLY.... http://ost.ebeans.ch/albums/userpics/100...
FINALLY....

http://ost.ebeans.ch/albums/userpics/10005/after_valve_job_____.jpg

one of the negatives to having an "in" at a race shop... sometimes when they have their own clients work... ...
2016-01-20 20:02
Thread: OST-037: Under Pressure
Post: The head is back @ the race shop...... do to the ice, and...
The head is back @ the race shop...... do to the ice, and the fact that the shop is closed Fridays.... I'm hoping for it back by next weekend.... once more happens, I'll post more....
2016-01-08 06:04
Thread: OST-037: Under Pressure
Post: our specs.... http://ost.ebeans.ch/albums/userpics/10...
our specs....

http://ost.ebeans.ch/albums/userpics/10005/SR20VE_valve_guide_specs.jpg

of course in millimeters - so we must convert

.04mm = .00157"
.073mm = .00287"

So tight guides w...
2015-12-21 19:14
Thread: OST-037: Under Pressure
Post: our specs.... http://ost.ebeans.ch/albums/userpics/10...
our specs....

http://ost.ebeans.ch/albums/userpics/10005/SR20VE_valve_guide_specs.jpg

of course in millimeters - so we must convert

.04mm = .00157"
.073mm = .00287"

So tight guides w...
2015-12-21 19:14
Thread: OST-037: Under Pressure
Post: I had to look this up.... still unsure, unless it is a s...
I had to look this up.... still unsure, unless it is a synonym for cyl volume matching.... but yes, with new valves, and machine work to come, I may need to adjust chamber volumes.

Speaking...
2015-12-05 21:15
Thread: OST-037: Under Pressure
Post: Forgot this until today.......... http://ost.ebeans.ch...
Forgot this until today..........

http://ost.ebeans.ch/albums/userpics/10005/ost-037.jpg

this head now carries an OST serial number ;)


a slightly different view.... this time from the i...
2015-12-02 23:09
Thread: OST-037: Under Pressure
Post: Forgot this until today.......... http://ost.ebeans.ch...
Forgot this until today..........

http://ost.ebeans.ch/albums/userpics/10005/ost-037.jpg

this head now carries an OST serial number ;)


a slightly different view.... this time from the i...
2015-12-02 23:09
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