BURTZ Engine info Q....
 

I have heard that ‘someone’ .... is making/going to produce the SPECIAL oil filter bolts/fasteners, which are needed to adapt oil filter to Burtz blk.

Anyone know details of this, or know where these bolts can be obtained ??
Thanks for any help !

Re: BURTZ Engine info Q....
 

Stay tuned, I know they are working on it. I don’t know the price or who will be selling them. I had mine made by a machinist local. He used 7/8” hex in case I ever wanted to go the next size bigger pipe thread on the end. 3/4” hex is big enough for 1/4” pipe thread.

Re: BURTZ Engine info Q....
 

The "Special" bolts have been made and I shipped them to John Lampl last Monday. John should have them this afternoon.

They are made from 6061-T6 aluminum and the big one broke at 50 lb-ft.

John will contact all kit and flywheel buyers with details.

Re: BURTZ Engine info Q....
 

What size is the thru hole for the oil?

John

Re: BURTZ Engine info Q....
 

The large bolt has a 5/16 inch hole through the center to feed the main oil galley and the head is tapped 1/4 NPT.

The small bolt has a 1/16 inch through hole for an oil gauge and the head is tapped 1/8 NPT.

Re: BURTZ Engine info Q....
 

That should be large enough for the main oil feed.
I would think that for higher performance you might want it larger.

John

Re: BURTZ Engine info Q....
 

Hey Terry,
Great news, thanks !
I’ve ordered one light flywheel. Maybe the bolts can be picked up with ?

What ever the plan, we’re thankful for all efforts by YOU and John !

Good news !
FLYWHEELS are in !
Waiting for acknowledgment of payment and to PICKUP goods !!

Re: BURTZ Engine info Q.... OIL FILTER QUESTIONS
 

It would be nice

Re: BURTZ Engine info Q....
 

We used a non-hardened 9/16 Bolt, tapped a 5/16 hole through the bolt, and taped the head for 1/4 NTPF.

The pictures are of our first bolt. I was somewhat concerned with how deep the NPTF went into the bolt (past the head). We then welded another head onto the bolt for more material, and made a new bolt similar to the one shown, but with the two bolt heads. The block was tapped for a standard 9/16 bolt.

That one is installed on the engine, (last picture), torqued to ~40 ft Lbs, and works fine.

Re: BURTZ Engine info Q....
 

Hey Vicky,
Nice work !
Thanks for your help and the pics.

Re: BURTZ Engine info Q....
 

See my reply earlier on how I made my ones, I used the best steel available,an old model A driveshaft for it.
Lawrie

Re: BURTZ Engine info Q....
 

My oil filter setup.
Lawrie

Re: BURTZ Engine info Q....
 

is that a 7/16" bolt or 9/16s"?

a 5/16 hole thru leaves oh-too-thin a wall in the 7/16"

John

Re: BURTZ Engine info Q....
 

The bolt and thread are NOT 7/16ths. from memory the new bolt OD is .530 and the thread in the block is the 7/16 helicoil, that is .530 od.
Lawrie

Re: BURTZ Engine info Q....
 

If I understand correctly, the bolt is not 7/16 dia, as standard.

OK, That makes sense.

Thanks, John

Re: BURTZ Engine info Q....
 

The original Model A bolt is 7/16-14. The guide online for installing an oil filter recommend drilling the block to the size required for a 7/16” helicoil. Then tap the threads for a helicoil that is 14 threads per inch. You do not use the helicoil if installing a filter, but if you decide to remove the oil filter and install the original hardware, then you install a helicoil and the original bolt. Whatever works best for the user as long as all passages are at least 5/16” from the fitting where the oil exits from the middle side of the block through all of the fittings and filter head to the point where the oil returns to the oil galley.