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Doctor510

Member Since 20 Dec 2010
Offline Last Active Yesterday, 06:16 PM
*****

#1471272 L 20 B Rebuild...a work in progress

Posted by Doctor510 on 15 March 2017 - 03:23 PM

There should be no difference between the l18 and l20 i believe they are the same at 85mm. Unless the l18 had flat top pistons stock. Not sure. but either way a set of flat top pistons would be a good option.. don't know if they need a need the valve relief in the face or not.. There's a lot of guys here with the l20b motor so you'll get alot of good opinions with this post...

The dish in the L18 is supposed to be smaller than the L20B.  You do not need a valve relief in the pistons.




#1463984 L16 Broken head/block bolt?

Posted by Doctor510 on 20 February 2017 - 06:56 PM

Lol no guppy hands here.  I was asking if one would pull the engine just to replace that freeze plug?  Drove the truck around all day today and ran like a top, love driving it when its warm and sunny out.  

if you are a smart ONE, yes you would!


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#1463880 L16 Broken head/block bolt?

Posted by Doctor510 on 20 February 2017 - 02:39 PM

Would you pull it to replace the rear freeze plug?

Unless your hands are size of a guppy fin, you will have to either remove the head or pull the engine.


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#1461153 NO Brakes till pedal hits the floor.

Posted by Doctor510 on 11 February 2017 - 06:07 PM

Bleed the M/C!




#1455635 Weber 45's vs 50 or 55 dco/sp's

Posted by Doctor510 on 26 January 2017 - 07:46 AM

The 'chokes" (main venturis) are too big, try 36's. Your port velocity sucks.




#1455091 83 720 manual trans fill plug wont break loose

Posted by Doctor510 on 24 January 2017 - 05:01 PM

Pipe wrench (BIG one) and HEAT!




#1452772 Please help me to choose a Piston

Posted by Doctor510 on 17 January 2017 - 01:53 PM

L16 bore is the same as the L24 (240Z), they were flat tops from the factory.  L18 will accept the L28 (280z) flat top pistons, it will be a 0.040" (1mm) over bore.  Good luck




#1451565 L20b with dual weber now running...kind of

Posted by Doctor510 on 14 January 2017 - 03:03 PM

Weer DCOE carbs do not have an accelerator pump diaphragm, they have a brass barrel as the pump.




#1445140 Dual SU Adjustment

Posted by Doctor510 on 25 December 2016 - 03:34 AM

That is a water line not the PVC line.




#1444800 bends in hood?

Posted by Doctor510 on 23 December 2016 - 12:12 PM

Commonly known as a "taco'd hood"...




#1436159 Crankshaft rear flange?

Posted by Doctor510 on 19 November 2016 - 01:22 PM

If you start drilling with a LEFT Handed drill bit often the heat and the direction of the twist can help, Good luck




#1433369 going electronic distributor

Posted by Doctor510 on 09 November 2016 - 05:30 PM

STANDARD MOTOR PRODUCTS DG67 Intermotor; For Hitachi Distributor;Material: Bronze Info
w/ 0.627 Inch Straight Bore Bushing; Hitachi Distributor
 
 
 
prevIMGbig.png
DG67photo%20primary__ra_t.jpg
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Out of Stock

 
 
STANDARD MOTOR PRODUCTS DG68 Intermotor; For Hitachi Distributor;Material: Bronze Info
w/ 0.6299 Inch Bore Top Hat Bushing; Hitachi Distributor
 
 
 
prevIMGbig.png

DG68photo%20primary__ra_t.jpg

 

May not be available, check eBay there is a company that makes them.

 

 




#1433294 Identification of hardware (nuts and bolts) for 510 ??

Posted by Doctor510 on 09 November 2016 - 12:23 PM

Be sure to clean the female threads with a thread chaser or tap.  As mentioned M8x1.25




#1432182 New Timing Chain Noise B210

Posted by Doctor510 on 04 November 2016 - 06:11 PM

Ok.  I'll give that a try. I was looking at some advice that said I could possibly change the cam timing by adjusting the distributor. Either way looks like I'm taking that sucker apart again.  Ugh. Just sucks cause I'm working outside on my back in the cold, and re-torqueing all the oil pan bolts to 4 ft. lbs. sucks bizalls! Will let ya know if I figure it out.  Thanks so much!

You cannot change the cam timing with the distributor!  Remove the front cover, remove the rocker shaft on top of the head.  That will take ALL the pressure off the valve springs so you can adjust the cam timing.  Take your time and get it right.  I build a lot of the Roadster R16 motors, they are very similar.




#1432133 New Timing Chain Noise B210

Posted by Doctor510 on 04 November 2016 - 03:20 PM

Did you put a NEW chain tesioner in?  When in doubt, reset the cam timing.