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Broken timing cover dizzy mount


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#21 G-Duax

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Posted 22 October 2017 - 05:47 AM

Drill holes in a flywheel, in order to hold the engine from turning ???

 

Kind of kills the balance.

Maybe OK on a farm tractor that has a max RPM of 2000, but not on a car engine.

 

Why not just use the holes already in it, that are for the pressure plate ?



#22 DanielC

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Posted 22 October 2017 - 06:30 AM

I believe in my post I mentioned drilling holes in the angle steel, not the flywheel.  You then use the pressure plate bolts, into the pressure plate bolt holes, to hold the steel angle to the flywheel.



#23 d.p

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Posted 22 October 2017 - 08:15 AM

Crash said to wedge the crank from below but I got no easy way to get the pan off right now cause I don't have a stand.  I don't have any flat iron either but I guess I can find some somewhere.  If I were to do that just drill a couple holes in it and slap it on the back of the crank using 2 of those 5 bolts? 

 

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#24 datzenmike

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Posted 22 October 2017 - 08:17 AM

Could probably slip something between the crank bolts.


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#25 G-Duax

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Posted 22 October 2017 - 08:18 AM

You can also stuff #1 cylinder full of clean rags, and bolt the head back on using just the bolts around that cylinder.

Just snug the bolts down, no need to torque them.

The rags act as a nice soft piston stop :)



#26 d.p

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Posted 22 October 2017 - 08:20 AM

Maybe a long screw drive in between the crank bolts? And I thought about putting the head back on, short or long bolts around #1? I ask because my son knocked over my labeling cardboard so I got no idea which is which anymore.   Even when the head is on do I need to hold the cam bolt when I break the crank loose or is having the head on enough?  



#27 G-Duax

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Posted 22 October 2017 - 08:32 AM

Not if the cylinder is packed with rags. No need to even have the cam in the head.



#28 Stoffregen Motorsports

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Posted 22 October 2017 - 09:07 AM

Pull oil pan, block crank with board, long breaker bar.

This is the best way to get it done. The board provides a positive stop for the crank without damaging anything when you wail on the breaker bar.



#29 wayno

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Posted 22 October 2017 - 09:35 AM

If you take 2 of the bolts out of the crank in the rear a 2X4 might fit between the rest of them.

Personally I would just lay the thing on its side, stick a 2X4 in the crank and be done with it, it's just an L16 block, I would never rebuild an L16 block, I would get an L20b as that would be the best bolt in upgrade you can make to a 521.


 

 


#30 Stoffregen Motorsports

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Posted 22 October 2017 - 10:50 AM

 

Personally I would just lay the thing on its side, stick a 2X4 in the crank and be done with it, it's just an L16 block, I would never rebuild an L16 block, I would get an L20b as that would be the best bolt in upgrade you can make to a 521.

It won't hurt anything. The wood is a lot softer than anything in the crankcase.



#31 d.p

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Posted 23 October 2017 - 07:10 AM

If you take 2 of the bolts out of the crank in the rear a 2X4 might fit between the rest of them.

Personally I would just lay the thing on its side, stick a 2X4 in the crank and be done with it, it's just an L16 block, I would never rebuild an L16 block, I would get an L20b as that would be the best bolt in upgrade you can make to a 521.

 

This begs my next question, I can get a L20B engine for $200 or a rebuilt L16 w/arias Pistons, eagle cam for $700.  Is one a better buy than the other?



#32 racerx

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Posted 23 October 2017 - 07:30 AM

What's the condition of L20?

#33 Stoffregen Motorsports

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Posted 23 October 2017 - 07:54 AM

I wouldn't trust a rebuilt anything for $700.

 

Go for the L20B and have it rebuilt. At least then you'd have some kind of warranty. A good machine shop should be able to do a basic rebuild on a L20B for $1000, maybe less if they know which corners to cut.



#34 wayno

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Posted 23 October 2017 - 06:10 PM

Best upgrade I ever made was going from an L16 to an L20b, second best upgrade was going from an L20b to an LZ23.

Going from a down draft to dual SUs was also great, but I bought them new from Nissan when they had a clearance sale, that was a great upgrade, but the L16 to L20b is the best bolt in upgrade I ever made.

I have so many great upgrades I have done over the years, it's hard to rate them against each other, but the best upgrade I ever made hands down is going from a naturally aspirated SD25 diesel engine to a turbocharged SD25 diesel engine, the driveability change was unbelievable, one just doesn't believe that something can change that much with so little effort, especially when I had all the parts for years but didn't know how to do it. 

 

I would spend the money on an L20b, what head casting does this L20b have?


 

 


#35 d.p

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Posted 23 October 2017 - 06:19 PM

Dunno but the guy has a a87 peanut heads for sale too. He on here as qwik510.

https://washingtondc...6345978262.html

#36 wayno

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Posted 23 October 2017 - 06:25 PM

Head casting is everything, need to know what casting it is.

I know of him, bought some parts from him in the past.

A87 heads can be open or closed, U67 heads are all open but have large valves and large intake ports, when the right pistons are used it becomes a race head.


 

 


#37 datzenmike

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Posted 23 October 2017 - 07:03 PM

Most likely you will have a U67 head. They are the best L20B head.

 

To get the most out of a closed chamber head you need flattops. Don't bother with that idea.

 

 

U67 head with L16 exhaust manifold and intake. Drill out the two missing water coolant holes, 3/8" will do, and away you go.

 

Two liter engine with cast iron header. :thumbup:


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#38 hang_510

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Posted 23 October 2017 - 10:59 PM

Assemble with the distributor holding it in place


Looks like what the person who assembled last did

"I can spend time working on the Dattos, or wasting money at the strip club. You make the call." :D


I'll put on chain mail and a dirt bike tire jock strap and drive it!!!!!


#39 Doctor510

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Posted 24 October 2017 - 02:27 AM

Got a questions.

I have a spare l16 which I took the head off and now want to take the timing cover off. What is the easiest way to remove the crank bolt with the head off (chain is wedged)?

IMPACT wrench



#40 Stoffregen Motorsports

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Posted 24 October 2017 - 06:31 AM

IMPACT wrench

Yeah, I know.

 

He says he doesn't have an impact wrench. How can you work on cars and not have an impact wrench?