Jerry Taylor's Dove Head and Intake using T&D Rockers
Rocker geometry Check on Shelby Block
Jerry confirmed we should proceed with repairs 3/11/02
ATTENTION!!!!
Jerry...John checked the exhaust valve outside diameter margin clearance to one of our 4.250" bore blocks this afternoon....your exhaust valves touch the bore at .600 lift without a head gasket......you DO NOT have clearance with 1.750" exhaust valves!!! This must be corrected or you will have catastrophic damage after little running time....I have been down this road...it will not live...the exhaust valve most likely need to be down to about 1.670" at the big lift cam you have.... In order to do this the seats will need to be replaced with smaller ID ones in order to install smaller exhaust valves. I'm not sure the valves you have will take being turned this much smaller.....You need to call on Monday 3/11/02...
Example Image of how close exhaust valve is to 4.250 Bore
Removing Old
Exhaust Seats
Push Rod Hole Sleeved 
SEE BELOW 2 BOM'S 3/10/02
George
Top Dove New/ Bottom Dove Older
version
Top Dove New/Bottom Dove Older
Version
Top Dove New/Bottom Dove
Older Version
Pressure Check views to follow soon......
some aren't' in perfect focus but at shown for locations of leaks
Enough air leak to blow these stripes of paper!
Push rod hole has really bad leak
in middle
Second P/C of Dove Heads after initial weld repair in one area
New leak shows up....additional
welding to follow2/14/02 
Sleeved Intake manifold 
3/28/02
one more 4/7/02
Reseating The Dove Heads for smaller Exhaust Valves
new seats submerged in liquid
nitrogen just before installation 
Final Boxing
Jerry...Two BOM's Below....
(1) is head and Intake Repairs 526.45$ (Actual 591.45)
(2) is for Final Head Work (incl seats) & Assembly/Shipping 1094.76$
Jerry's Estimate on The Weld & P/C Work Heads & Intake Only (3/9/02)
Date: 3/9/02 Customer: Jerry Taylor Current FE 01/2002 |
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Job #: 26400 Engine Type: 427 Ford Engine Year: |
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QTY |
DESCRIPTION |
PRICE |
TOTAL |
|
2 |
2 |
Pressure Check heads (1st Time) Spring Pad Leaks on one |
38.00 |
76.00 |
1 |
1 |
Pressure Check Weled head (2nd time one head) area next to |
32.00 |
32.00 |
Spring pad leaks (do 2nd welding) |
- |
|||
1 |
1 |
Pressure Check head 3rd Time after all welding repairs |
32.00 |
32.00 |
1 |
1 |
Machine welded spring pad area after first weld and machine area next to |
68.00 |
68.00 |
Pad after 2nd weld |
- |
|||
1 |
1 |
Pressure check intake manifold (Leaks) one leak in push rod hole and one |
48.00 |
48.00 |
leak found in front bottom plate bolt hole |
- |
|||
1 |
1 |
Bore out and install repair sleeve in Dove Intake Push rod hole |
138.00 |
138.00 |
1 |
1 |
Repressure check intake manifold after repairs above |
40.00 |
40.00 |
- |
||||
- |
||||
Total Labor Required As Listed Above |
434.00 |
|||
***************************************************************************************** |
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1 |
1 |
Preheat & Weld One Head 1st time on Spring pad |
65.00 |
65.00 |
1 |
1 |
Preheat $ Weld One head 2nd time Next to Spring pad area |
45.00 |
45.00 |
1 |
1 |
Machine Sleeve For Intake Push Rod Hole Repair |
32.45 |
32.45 |
- |
||||
1 |
1 |
Shop Supplies |
15.00 |
15.00 |
See http://www.gessford.com/cobraparts/fords.htm For Addl. Parts Prices |
||||
Total Parts Required As Listed Above |
157.45 |
|||
Total Quote For This Engine Job (Parts & Labor) |
591.45 |
|||
All Prices Subject To Change |
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Jerry's Estimate on Doing Reassembly Of Heads With Correct Springs etc. We now have added new Exhaust Seats...and will try to use the current valves you have....
Date: 3/9/02 Customer: Jerry Taylor Current FE 01/2002 |
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Job #: 26234 Engine Type: 427 Ford Engine Year: |
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QTY |
DESCRIPTION |
PRICE |
TOTAL |
|
Block Labor Options |
||||
1 |
1 |
Dummy Assemble Jerry's Heads on Shelby Block to check geometry of 1.900 |
- |
|
and correct push rod length (No Charge to check) |
- |
|||
1 |
1 |
Install Jerry's Dove Heads with 1.750 Exh Valves On 427 4.250" Bore Block |
- |
|
to check Exhaust Valve to Bore Clearance….Insufficient clearance even at |
- |
|||
.600 lift without a head gasket….Exhaust Valve Diameter is too large |
- |
|||
Valves need to be reduced in Size and Rechecked at Full Lift (No Chg) |
- |
|||
We are doing this at no charge because we know with Dove's You Can't run |
- |
|||
this big valve at that lift…..it needs to be corrected |
- |
|||
Head Labor Options |
- |
|||
8 |
8 |
Machine Dove Heads Valves At 1.750 Down To 1.670 For .060 Bore ----- |
8.50 |
68.00 |
Clearance at .___" Lift (Base Cam Lift + .050") This Is Edge Of Valve To Bore |
- |
|||
8 |
8 |
Install Exh Seats For Smaller Valves In Dove Heads As Reqd T-1809 |
15.50 |
124.00 |
8 |
8 |
Final Grind Valves & Seat Three Angle 2000/2001 Performance |
24.00 |
192.00 |
Intake: 20/30/45 Deg. And Exhaust: 30/45 Deg. (Or As Required) |
- |
|||
2 |
2 |
Final Clean Heads & Parts For Assembly |
24.00 |
48.00 |
2 |
2 |
Assemble Heads at 1.900" Per Cam Spec card And Spring -- |
- |
|
Part Number 998-16 (Spring Mfg. Comp) |
- |
|||
Heads were pressure checked on the other Job Card |
- |
|||
Total Labor Required As Listed Above |
432.00 |
|||
***************************************************************************************** |
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Camshaft Info From Jerry 33-788-9 Comp Roller |
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Part List Options/Requirements |
||||
8 |
8 |
T-1809 Hard Exhaust Seats For Dove Heads (Smaller Ex Valve 1.670) |
6.45 |
51.60 |
1 |
1 |
998-16 Double Spring W/Dampner 1.625H11 x .769 ID 228# @ 1.900" |
264.00 |
264.00 |
702# @ 1.200 & Coil Bind @ 1.090 |
- |
|||
1 |
1 |
733-16 Titanium Retainers |
139.04 |
139.04 |
1 |
1 |
612-16 10 Deg Super Locks |
19.84 |
19.84 |
1 |
1 |
4702-16 Comp Spring Seat Locator Cups |
35.84 |
35.84 |
1 |
1 |
505-16 Comp Positive Stem Seals .531 x 3/8 on Int & Exh |
27.04 |
27.04 |
16 |
16 |
Spring Shims as reqd for final assy (Estimate) |
0.65 |
10.40 |
1 |
1 |
Shipping To FL on Heads & Intake (Allow 50-75$) |
75.00 |
75.00 |
1 |
1 |
Allow for Wood Head Boxes and Intake Shipping Materials |
40.00 |
40.00 |
See http://www.gessford.com/cobraparts/fords.htm For Addl. Parts Prices |
||||
Total Parts Required As Listed Above |
662.76 |
|||
Total Quote For This Engine Job (Parts & Labor) |
1,094.76 |
|||
All Prices Subject To Change |
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mailto:taylorj@wpb.nuwc.navy.mil
http://www.gessford.com/cobraparts/fords.htm
05/04/02