2790 built me another engine

I built up another L20 for a temp motor in my green machine cause i was having problems with my L16.

Nothing fancy but it will do the trick

OK, Looks great,

But I need some advice for the L20B going into my dads 78 510 wagon... I have the L20 B coming out of his wagon (200,000+)(original owner), I have a 1980 720 L20B with weber carb, was running, but condition really unknown..., And a L-18 that is supposed to be a recent rebuild with possible cam... has the "good head" . What are my options? My dad is thinking re-ring and bearing the bottom end on his L20, have the head and cam checked out on the L-18, and install it all together and use the weber carb. We are pulling all the smog and AC stuff off the wagon for easier maintenance. Thanks, Garry K

Depends on the head on the L18. You don't really want to run a closed-chamber head on a L20B on a daily driver. Means running premium all the time.

Me, I'd install the L18 and rebuild the L20B the right way, all the way. Though you'll need to add a new dipstick hole since the L18 likely uses the rear or mid sump and the '78 510 used a front sump.

The 720 L20B will have the same issues, plus have a few other gotchas. The 1980 L20B is a Z20S casting which isn't a bad thing but has extra motor mount holes etc.

Madizm, the L 20 looks good. Those are some long headers, what kind is it?

I was told they are hooker headers but i really don't know, not sure hooker ever even made headers for the datsuns and i'm not to sure these will fit in my 620 with out removing the torsion bars.

I meat a new 620 owner here on the island and he has a pretty slick 620, check it out and let me know what you think.

What a clean 620, it looks ready to show! The shaved KC windows look cool too!

wow it is really nice. Very smooth; lots of shaved stuff.

Its even a good color!

I like the interior choice of upholstery, very clean and classic.

Garry K

thank you madizm620 for posting these pics of my truck.its a 76 with too mush time and money put into it lol,ive pretty much rebuilt everything(new pistons and rings goin in it this weekend depending on part delivery-racin mishap)l20b engine bored .030, duel 40mm dellortos,msd ignition system,same header as madizm620(it does go in with the torsion bars just requires abit of work),shadbolt cam not 100% sure of duration or lift,electronic ignition with gm hei module,stock frt. suspension torsion bars cranked down,rear is on air(shocks for now-frt. and rear bags in my bench at work waitin to go in)on board air via a gm ac compressor(engine driven).costum tanaue cover and roll pan,early honda seats dyed to match paint.future plans include a BRE frt.air dam and bre paint scheme in metallic silver n lime green.Have a good day yall

oh man,, time to change my pants !! VERY nice truck.

I think that may be the coolest 620 I have ever seen
Jeff

thanks for likin it so much(makes me feel good lol)my pistons showed up today so ill be pullin an allnighter to try to make it to the century toppers show in the mornin(kinda doubtful tho i still got so many lil bits and pieces to paint or polish).I cant wait till madizms is back on the road,then will have a sweet picture of 2 lime green 620s together.Have a good day yall

hey squirt, to the right of you r break master, is that a purge for your fuel tank? the one with the breather on it?

also, "squirt", does that refer to oh, say, maybe, nos?

the breahter is the air inlet for his o.b.a. compressor

I like the Ofenhauser (sp) intake on that engine. Man squirt that truck looks like you have spent some time, looks good.

the K&N beside the master is for the a/c compressor n the nos sticker was just sittin in my tool box at work so i used it to cover the gm sticker(been removed now-changed compressors now it just has a msd sticker on it).

Author	Message
madizm620 Enthusiast Joined: 24 February 2003 Location: Canada Posts: 440	Topic: built me another engine Posted: 04 July 2005 at 9:33pm
	I built up another L20 for a temp motor in my green machine cause i was having problems with my L16. Nothing fancy but it will do the trick
	Lean Green Datsun Machine
	IP Logged

Grahem Groupie Joined: 03 December 2002 Location: Canada Posts: 119	Posted: 04 July 2005 at 10:30pm
	nice
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garryk6 Enthusiast Joined: 04 December 2004 Posts: 338	Posted: 05 July 2005 at 9:11am
	OK, Looks great, But I need some advice for the L20B going into my dads 78 510 wagon... I have the L20 B coming out of his wagon (200,000+)(original owner), I have a 1980 720 L20B with weber carb, was running, but condition really unknown..., And a L-18 that is supposed to be a recent rebuild with possible cam... has the "good head" . What are my options? My dad is thinking re-ring and bearing the bottom end on his L20, have the head and cam checked out on the L-18, and install it all together and use the weber carb. We are pulling all the smog and AC stuff off the wagon for easier maintenance. Thanks, Garry K
	1966 L520 J-13ss Daily Driver 1964 NL320 Project Monster Datsun 35" mudders 1963 NL320 Restoration Proj 1948 Chevy PU Restored 1932 Ford model B PU project 1948 Allis Chalmers G tractor
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datsunaholic Moderator Group Joined: 05 December 2002 Posts: 4079	Posted: 05 July 2005 at 1:11pm
	Depends on the head on the L18. You don't really want to run a closed-chamber head on a L20B on a daily driver. Means running premium all the time. Me, I'd install the L18 and rebuild the L20B the right way, all the way. Though you'll need to add a new dipstick hole since the L18 likely uses the rear or mid sump and the '78 510 used a front sump. The 720 L20B will have the same issues, plus have a few other gotchas. The 1980 L20B is a Z20S casting which isn't a bad thing but has extra motor mount holes etc.
	'64 320 '68 520 '72 521 V6 '74,75,79 620s '76,78 4X4 '76 KC '72 510 Wgn '78 B210 '78,81 510 Wgn 2X '78 510 Coupes '83 720 KC
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pac. coast 521 Expert Joined: 17 November 2003 Location: United States Posts: 1427	Posted: 05 July 2005 at 4:17pm
	Madizm, the L 20 looks good. Those are some long headers, what kind is it?
	My 1965 L 320 {all original} 69 L 521 w/KA swap 94 Hardbody [custom] 74 620 project
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madizm620 Enthusiast Joined: 24 February 2003 Location: Canada Posts: 440	Posted: 06 July 2005 at 12:23am
	I was told they are hooker headers but i really don't know, not sure hooker ever even made headers for the datsuns and i'm not to sure these will fit in my 620 with out removing the torsion bars.
	Lean Green Datsun Machine
	IP Logged

madizm620 Enthusiast Joined: 24 February 2003 Location: Canada Posts: 440	Posted: 06 July 2005 at 12:55am
	I meat a new 620 owner here on the island and he has a pretty slick 620, check it out and let me know what you think.
	Lean Green Datsun Machine
	IP Logged

tdaaj Expert Joined: 02 March 2003 Posts: 2367	Posted: 06 July 2005 at 1:37am
	thats really cool.
	numourous amount of datsuns 1 jeep 2 troopers 1 chevy 70 chrysler newport 383 power 71 Plymouth Fury 3 (girlfriends car)
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pac. coast 521 Expert Joined: 17 November 2003 Location: United States Posts: 1427	Posted: 06 July 2005 at 9:13am
	What a clean 620, it looks ready to show! The shaved KC windows look cool too!
	My 1965 L 320 {all original} 69 L 521 w/KA swap 94 Hardbody [custom] 74 620 project
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Bleach Guru Joined: 04 December 2002 Location: United States Posts: 4806	Posted: 06 July 2005 at 9:36am
	wow it is really nice. Very smooth; lots of shaved stuff. Its even a good color!
	Ratsun.net
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garryk6 Enthusiast Joined: 04 December 2004 Posts: 338	Posted: 06 July 2005 at 10:07am
	I like the interior choice of upholstery, very clean and classic. Garry K
	1966 L520 J-13ss Daily Driver 1964 NL320 Project Monster Datsun 35" mudders 1963 NL320 Restoration Proj 1948 Chevy PU Restored 1932 Ford model B PU project 1948 Allis Chalmers G tractor
	IP Logged

SquirtB Novice Joined: 06 July 2005 Location: Canada Posts: 27	Posted: 06 July 2005 at 2:58pm
	thank you madizm620 for posting these pics of my truck.its a 76 with too mush time and money put into it lol,ive pretty much rebuilt everything(new pistons and rings goin in it this weekend depending on part delivery-racin mishap)l20b engine bored .030, duel 40mm dellortos,msd ignition system,same header as madizm620(it does go in with the torsion bars just requires abit of work),shadbolt cam not 100% sure of duration or lift,electronic ignition with gm hei module,stock frt. suspension torsion bars cranked down,rear is on air(shocks for now-frt. and rear bags in my bench at work waitin to go in)on board air via a gm ac compressor(engine driven).costum tanaue cover and roll pan,early honda seats dyed to match paint.future plans include a BRE frt.air dam and bre paint scheme in metallic silver n lime green.Have a good day yall
	dat 620
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Ryan in Seattle Expert Joined: 08 December 2002 Location: United States Posts: 2701	Posted: 06 July 2005 at 5:45pm
	neat
	1973 620 "Prerunner" L20B,A87,5spd.Lynx,40dcoe, header,cammed & bored. zx oil pump,starter,headbolts & water pump/pulley.
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BADPENNY Enthusiast Joined: 17 February 2005 Location: United States Posts: 406	Posted: 07 July 2005 at 11:49am
	oh man,, time to change my pants !! VERY nice truck.
	77Westy,427Cobra,FenderAxe, 77KingCabDeluxe620,89Wrangler,00BMWZ32.3
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sjeff64 Enthusiast Joined: 01 June 2005 Posts: 361	Posted: 09 July 2005 at 1:13pm
	I think that may be the coolest 620 I have ever seen Jeff
	64 custom NL320 72 521 86 200sx
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SquirtB Novice Joined: 06 July 2005 Location: Canada Posts: 27	Posted: 09 July 2005 at 5:34pm
	thanks for likin it so much(makes me feel good lol)my pistons showed up today so ill be pullin an allnighter to try to make it to the century toppers show in the mornin(kinda doubtful tho i still got so many lil bits and pieces to paint or polish).I cant wait till madizms is back on the road,then will have a sweet picture of 2 lime green 620s together.Have a good day yall
	dat 620
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Ryan in Seattle Expert Joined: 08 December 2002 Location: United States Posts: 2701	Posted: 10 July 2005 at 10:00pm
	hey squirt, to the right of you r break master, is that a purge for your fuel tank? the one with the breather on it? also, "squirt", does that refer to oh, say, maybe, nos?
	1973 620 "Prerunner" L20B,A87,5spd.Lynx,40dcoe, header,cammed & bored. zx oil pump,starter,headbolts & water pump/pulley.
	IP Logged

Grahem Groupie Joined: 03 December 2002 Location: Canada Posts: 119	Posted: 11 July 2005 at 2:06am
	the breahter is the air inlet for his o.b.a. compressor
	IP Logged

waylon Novice Joined: 29 April 2005 Location: United States Posts: 19	Posted: 12 July 2005 at 7:40am
	I like the Ofenhauser (sp) intake on that engine. Man squirt that truck looks like you have spent some time, looks good.
	Waylon 65 1500 roadster 66 1600 ka24 72 510 vg30 76 620 4x4 78 620 79 king cab p.u. 86 300z parts car (let me know if you need) 86.5 hardbody p.u. 04 spec v
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SquirtB Novice Joined: 06 July 2005 Location: Canada Posts: 27	Posted: 12 July 2005 at 3:02pm
	the K&N beside the master is for the a/c compressor n the nos sticker was just sittin in my tool box at work so i used it to cover the gm sticker(been removed now-changed compressors now it just has a msd sticker on it).
	dat 620
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