Question about 2000 Harley Davidson FXSTD Softail Duece

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Have h-d screaming eagle stock bore high compression pistons. what would be compression ratio with s-e kompressor heads # 17044-08. pistons # 22864-00 2003 fxstdi.

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You are now going to be at a 10.5 CR, you cam will determine your dynamic CR. Watch your cylinder pressure as a result of your cam choice also.

JP

Posted on Aug 14, 2009

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What is the clearance for rod bearings on the crank of a 98 ford f 150 4.6


General Specifications Item Specification
Displacement L (CID) 4.6 (281)
Number of Cylinders 8
Bore and Stroke mm 90.2 x 90.0
Firing Order 1-3-7-2-6-5-4-8
Oil Pressure (HOT @ 1500 rpm) kPa 138-310
Drive Belt Tension a
Cylinder Head and Valve Train
Combustion Chamber Volume cm 52?±.5
Valve Seats Width?€"Intake mm 1.9-2.1
Valve Seats Width?€"Exhaust mm 1.9-2.1
Valve Seats Angle 44.51-45.01 degrees
Valve Seats Runout (T.I.R.) Max mm 0.025
Valve Arrangement (Front-to-Rear) (Left Hand) E-I-E-I-E-I-E-I
(Right Hand)
I-E-I-E-I-E-I-E
Valve Stem to Guide Clearance?€"Intake mm (Inch) 0.020-0.069
(0.00078-0.00272)
Valve Stem to Guide Clearance?€"Exhaust mm (Inch) 0.045-0.095 (0.0018-0.0037)
Valve Head Diameter?€"Intake mm (Inch) 44.5- (1.75)
Valve Head Diameter?€"Exhaust mm (Inch) 34.0 (1.34)
Valve Head Diameter?€"Gauge Diameters mm (Inch) 42.5- and 32.0
(1.67 and 1.26)
Valve Face Runout Limit mm (Inch) 0.05 (0.002)
Valve Face Angle 45.25-45.75 degrees
Valve Stem Diameter (STD)
?€"Intake mm (Inch) 6.995-6.975 (0.275-0.2746)
Valve Stem Diameter (Std)
?€"Exhaust mm (Inch) 6.970-6.949 (0.274-0.2736)
Valve Springs?€"
Compression Pressure N @
Spec. Length?€"Intake 587.14 N @ 28.02 mm
Valve Springs?€"
Compression Pressure N @
Spec. Length?€"Exhaust 587.14 N @
28.02 mm
Valve Springs?€"Free
Length ( Approximate)?€"
Intake mm (Inch) 49.55 (1.951)
Valve Springs?€"Free
Length (Approximate)?€"
Exhaust mm (Inch) 49.55 (1.951)
Valve Springs?€"Installed
Pressure N @ Spec. Length
?€"Intake 244.64 N @ 40.0 mm
Valve Spring?€"Installed
Pressure N @ Spec. Length
?€"Exhaust 244.64 N @ 40.0 mm
Valve Springs?€"Installed
Pressure N @ Spec. Length
?€"Service Limit 10 % Pressure Less @ 28.02 mm
Valve Springs?€"Installed
Pressure N @ Spec. Length
?€"Out of Square Limit 2 degrees
Valve Guide Inner
Diameter mm (Inch) 7.015-7.044 (0.2761-0.2773)
Rocker Arm?€"Ratio 1.75:1
Valve Tappet?€"Diameter
(STD) mm (Inch) 16.000-15.988 (0.66-0.629)
Valve Tappet?€"Clearance
to Bore mm (Inch) 0.018-0.069
(0.00071-0.00272)
Valve Tappet?€"Service
Limit mm (Inch) 0.016 (0.00063)
Valve Tappet?€"Hydraulic
Leakdown Rate b 5-25 seconds
Valve Tappet?€"Collapsed
Valve Tappet Gap?€"
Desired mm (Inch) 0.085-0.45 (0.0033-0.0177)
Camshaft
Lobe Lift?€"Intake
mm (Inch) 6.58939 (0.2594)
Lobe Lift?€"Exhaust
mm (Inch) 6.58939 (0.2594)
Lobe Lift?€"Allowable
Lobe Lift Loss mm (Inch) 0 (0)
Theoretical Valve Lift @
Zero Lash?€"Intake
mm (Inch) 12.0 (0.472)
Theoretical Valve Lift @
Zero Lash?€"Exhaust
mm (Inch) 12.0 (0.472)
End Play mm (Inch) 0.025-0.165
(0.00098-0.0065)
Journal to Bearing
Clearance mm (Inch) 0.025-0.076
(0.00098-0.003
Journal to Bearing
Clearance?€"Service Limit
mm (Inch) 0.021 (0.0048)
Journal Diameter (All)
mm (Inch) 26.962-26.936
(1.061-1.060)
Journal Diameter (All)?€"
Bearing Inside Diameter
(All) mm (Inch) 27.012-26.987
(1.063-1.0625)
Camshaft Runout
mm (Inch) 0.05 (0.002)
Cylinder Bore
Diameter?€"Surface Finish
(RMS) 0.2-0.6 Microns
Diameter?€"Out-of-Round
Limit mm (Inch) 0.015 (0.0006)
Diameter?€"Out-of-Round
Service Limit mm (Inch) 0.020 (0.00079)
Diameter?€"Taper Service
Limit mm (Inch) 0.006 (0.00023)
Piston
Piston?€"Diameter?€"
Coded Red 1 mm (Inch) 90.177-90.197
(3.550-3.551)
Piston?€"Diameter?€"
Coded Blue 2 mm (Inch) 90.190-90.210
(3.5507-3.5515)
Piston?€"Diameter?€"
Coded Yellow 3 mm (Inch) 90.203-90.223
(3.513-3.5521)
Piston-to-Bore-Clearance
mm (Inch) -0.015 + 0.031 (0.0005-0.0012)
Pin Bore Diameter
mm (Inch) 22.0015-22.004
(0.866-0.8663)
Ring Groove Width?€"
Compression (Top)
mm (Inch) 1.520-1.550 (0.06-0.610)
Ring Groove Width?€"
Compression (Bottom)
mm (Inch) 1.520-1.530 (0.060-0.0602)
Ring Groove Width?€"Oil
Ring mm (Inch) 6.996-7.224 (0.275-0.2844)
Piston Pin?€"Length
mm (Inch) 61.93-62.05 (2.44-2.443)
Diameter mm (Inch) 21.994-21.999
(0.866-0.8661)
Pin to Piston Clearance
mm (Inch) 0.005-0.010
(0.0002-0.0004)
Pin to Rod Clearance
mm (Inch) 0.015-0.040
(0.0006-0.00157)
Piston Rings?€"Ring Gap
?€"Compression (Top)
mm (Inch) 1.0 MAX (0.0394)
Piston Rings?€"Ring Gap
?€"Compression (Top)
mm (Inch) 1.0 MAX (0.0394)
Oil Ring?€"Side Clearance
mm (Inch) 1.25 MAX (0.05)
Oil Ring?€"Compression
(Top) mm (Inch) 0.040-0.090
(0.0016-0.0031)
Oil Ring?€"Compression
(Top) mm (Inch) 0.030-0.080
(0.0012-0.00031)
Oil Ring Snug Fit
Oil Ring?€"Service Limit
mm (Inch) 0.015 MAX (0.0006)
Ring Gap?€"Compression
(Top) mm (Inch) 0.23-0.49
(0.01-0.02)
Ring Gap?€"Compression
(Bottom) mm (Inch) 0.23-0.49
(0.01-0.02)
Ring Gap?€"Oil Ring (Steel
Rail) mm (Inch) 0.05-0.66 (0.006-0.026)
Lubrication System
Oil Capacity?€"Automatic
Transmission (Quarts U.S.) 6.675?±0.125
Oil Capacity?€"Manual
Transmission (Quarts U.S.) 6.425?±0.125
Cylinder Block
Main Bearing Bore
Diameter mm (Inch) 72.401-72.422 (2.85-2.851)
Crankshaft and Flywheel
Main Bearing Journal
Diameter mm (Inch) 67.483-67-503 (2.65-2.657)
Connecting Rod Journal?€"
Diameter mm (Inch) 52.988-53.003
(2.0861-2.0867)
Crankshaft Free End Play
mm (Inch) 0.130-0.301 (0.0051-0.012)
Crankshaft Runout to Rear
Face of Block mm (Inch) 0.050 MAX (0.002)
Connecting Rod Bearings
Clearance to Crankshaft?€"
Desired mm (Inch) 0.027-0.069 (0.001-0.0027)
Clearance to Crankshaft?€"
Allowable mm (Inch) 0.027-0/069 (0.001-0.0027)
Bearing Wall Thickness
(STD) mm (Inch) 2.44-2.452 (0.096-0.0965)
Main Bearings
Clearance to Crankshaft?€"
Desired mm (Inch) 0027-0.065
(0.0011-0.0026)
Clearance to Crankshaft?€"
Allowable mm (Inch) 0.027-0.065
(0.0011-0.0026)
Bearing Wall Thickness
(STD) mm (Inch) 1.920-1.928 (0.075-0.076)
Connecting Rod, Piston and Rings
Connecting Rod?€"Piston
Pin Bore Diameter
mm (Inch) 21.959-21.979
(0.864-0.865)
Connecting Rod?€"
Crankshaft Bearing Bore
Diameter mm (Inch) 56.756-56.876 (2.234-2.24)
Connecting Rod?€"Length
(Center-to-Center)
mm (Inch) 150.7 (5.93)
Alignment (Bore-to-Bore
Max. Diff.) c ?€"Twist
mm (Inch) 0.050 per 25 (0.0015-0.984)
Alignment (Bore-to-Bore
Max. Diff.)?€"Bend
mm (Inch) 0.038 per 25 (0.0015-0.984)
Side Clearance (Assembled
to Crank)?€"Standard
mm (Inch) 0.015-0.45 (0.0006-0.0177)
Side Clearance (Assembled
to Crank)?€"Service Limit
mm (Inch) 0.05 MAX (0.02)
Crankshaft Main Bearing
Journal Taper mm (Inch) 0.020 (0.0007)
Crankshaft Main Bearing
Journal Runout mm (Inch) 0.05 (0.002)
Crankshaft Connecting Rod
Journal Taper mm (Inch) 0.015 (0.0006)

Feb 15, 2011 | 1998 Ford F150 Regular Cab

1 Answer

I have a 88 sportster 883 /1200 is what I was told .How can I know or tell for sure a kit was put in it ??without tearin it down ..It now also has a s&s short E carb and samson double tube exhaust...


There was a way the drag strips used some sort of instrument to determine the displacement of an engine without a teardown. Seems it was called a P&G tube or something like that. I've never seen one. The only way I know of telling if your engine has be bored to the 1200 cc. piston size is to take the head off of a cylinder.

The S&S carb is an old design but it's simple to tune, that's what most people like about them. The CV type carbs are much better but American riders don't like them much. Although Mikuni is making headway under the Screamin' Eagle trademark.

Now, if you bike was orginally and 883 and it was converted to a 1200, there are two ways of doing it. One, was to buy a complete kit with pistons and heads. The other was to bore the original 883 cylinders and use the original 883 heads but the pistons had to be special drop top type pistons to keep the compression to a reasonable amount. The combustion chamber of the original 883 heads are much smaller than the chamber in the 1200 head. If you don't use the special pistons, you won't be able to keep head gaskets on the engine. Wiseco makes the pistons for the conversion.

As long as the engine is running good, don't worry about it.

Ride Safe
Steve

Sep 17, 2010 | 1993 Harley Davidson XLH Sportster 883

2 Answers

I had a 1989, 883 engine rejugged to a 1200 three years


It depends on the kit you used to increase the engine size. You cannot simply bore the jugs and put stock 1200 cc pistons in them and then use your original 883 heads. Now, the question is who made the kit and was it designed to be used with unaltered 883 heads.

The problem arises for the smaller combustion chamber of the 883 head compared to the 1200 head. The 1200 head has a much larger combustion chamber resulting in a stock compression ratio of about 9.4 to 1 or thereabouts. If you use stock 1200 piston with an 883 head, your compression ratio will be approximately 12 to l so I've been told. I've never done that. Now, every time I've ever converted an 883 to 1200 and used the original heads, I've always used Weisco pistons designed for that specific application. So, the point is that you may have too much static compression on the engine.

There is another problem that could be causing this as well, vibration. Your older Sporty does not have the rubber mounted engine, therefore your battery is subjected to a lot more vibration. Also, since you've changed the pistons in your engine, your rotating assembly may not be balanced as well as it should be increasing the vibration.

Now, I usually tell people that the average battery life is about two years due to the vibration problem and heat. I have lots of friends that buy a new battery every two years just so they don't get left stranded.

Whenever buying a new battery, always get the highest cold cranking amps (CCA) that you can find and keep a battery tender on it all the time. This will increase your battery life as much as possible.

Good Luck
Steve

Jun 30, 2010 | 1993 Harley Davidson XLH Sportster 883

1 Answer

Engine swaps


Either one would be great, depends on what prices you can find, if your replacing the internals, then it doesnt really matter which one you go with, especially if you are boring the cyllinders. Be careful not to bore more than is needed though, as you are planning high boost. You will also need to either sleeve the cyllinders or at the minimum weld in a girdle at the top. As for the 4 speed, no, you will need to swap tranny's, if you go with an OBD-0 motor to match up to your car, the matching tranny's weren't hydraulic, but your old one will only mate up to a D-series motor, and besides, it would never handle the power. Careful on your selection of compression ratio on the pistons also. You will need to make sure you stay with a low compression if your going turbo (ie. 8.5-9.0) If your not slapping a turbo on immediately, you will either sacrifice power for now, or if you go with higher compression pistons, then they will need to be replaced when you boost. Also, make sure you google around and find what kind of horsepower ratings your expecting, and see what size injectors your needing, and will of course need to replace your stock fuel pump. You by this point will be needing some sort of aftermarket engine management also.

May 26, 2009 | 1992 Honda Civic

1 Answer

While riding my yz 125 it just died and won,t kick up again


  • If a hole in the piston then install new piston and rings. Next, clean the carbon off the head and install a new head gasket.
  • If cylinder wall is scared the piston has seized up. Pull the cylinder off and take it to the dealer. Have them bore the cylinder and return it along with a new oversize piston and rings.
  • While at the parts counter, get a new stock spark plug and a supply of Yamalube Two Stroke Motor Oil. You need to add 4 ounces per gallon when filling up. This will be a 32/1 gas to oil ratio. NEVER ride the bike without at least the needed 32/1 mix.
Please rate the solution as a "FixYa" if able. Thanks!

Mar 23, 2009 | 2003 Yamaha YZ 125

1 Answer

Honda *** scooter, over heat


Hi and welcome to FixYa,

Appreciate the direct "Ask Me".

To my knowledge, there would only be a couple of reasons why a 2 stroke engine would overheat:
  • insufficient 2T oil, low pressure on the oil pump, restricted oil tube/hose, clogged/blocked oil injector in the carb;
  • too high a compression ratio, if the new piston is dome, oversized or the cylinder head has been shaved too much;
  • brakes partially engaged;
  • drive belt slipping;
  • clutch slipping.
Good luck and thank you for using FixYa.

Jan 31, 2009 | 2005 Honda Dio

1 Answer

Dome or Dish Pistons for Mazda FE3N 2L


The dome pistons will provide higher compression than the dished. the domed ones should have an eyebrow cut out for the valves. I believe you would be happiest going with the domes. you might run into spark knock with the increased compression

Nov 10, 2008 | 1993 Mazda 323

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