Turbo L series

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z chopper
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Turbo L series

#1

Post by z chopper » Wed Feb 19, 2014 5:35 pm

I have an L18e intake coming to me in a couple weeks. If I can track down an L20b block what head would be best for a turbo open or closed then for pistons flat top or dished??

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z chopper
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Re: Turbo L series

#2

Post by z chopper » Wed Feb 19, 2014 5:53 pm

oops might have put this in wrong spot, can a mod move it?

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Re: Turbo L series

#3

Post by Laecaon » Wed Feb 19, 2014 5:55 pm

Its in a fine spot.

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Re: Turbo L series

#4

Post by jtinluvr » Wed Feb 19, 2014 8:36 pm

Compression depends more on how much boost you plan to run. 9:1 with under 10psi would be safe. Find a combo that gets you in that area. Turbos make up for a lot of flow deficiencies.

Mark

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Re: Turbo L series

#5

Post by z chopper » Wed Feb 19, 2014 9:09 pm

I was thinking of a 280zxt turbo if that helps

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Re: Turbo L series

#6

Post by Taterhead » Thu Feb 20, 2014 6:12 am

Paging Blue, is Dr. Blue here?

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Re: Turbo L series

#7

Post by dislexicdime » Thu Feb 20, 2014 10:32 am

LTB pistons with the deep dish
kittens and bj's

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Re: Turbo L series

#8

Post by z chopper » Thu Feb 20, 2014 1:19 pm

LTB pistons?

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Re: Turbo L series

#9

Post by MicroMachinery » Fri Feb 21, 2014 12:51 am

L Twenty B? I know they drop right into an L18 and lower the compression.

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Re: Turbo L series

#10

Post by RedBanner » Fri Feb 21, 2014 1:14 am

I think the l18 pistons are 4 cc I think, l20b is close to 12cc.
L18, with open chamber head, l20b pistons, and 1mm headgasket is 7.77 to 1 compression
idk what the magic ratio is, before boost.
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Re: Turbo L series

#11

Post by z chopper » Fri Feb 21, 2014 2:03 am

ok good info

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Re: Turbo L series

#12

Post by dislexicdime » Fri Feb 21, 2014 10:59 am

kittens and bj's

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Re: Turbo L series

#13

Post by z chopper » Sun Feb 23, 2014 1:38 am

just thinking, maybe use 280zxt pistons since they should have the correct dish but I am sure the block would have to be bored even if using an L20b block. Then I am sure a cam oil spray bar would be useful also

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Re: Turbo L series

#14

Post by dislexicdime » Sun Feb 23, 2014 7:28 am

You only need the spray bar if you get a solid cam . Zx pistons will have the wrong compression you could use sr20det pistons
kittens and bj's

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Re: Turbo L series

#15

Post by jayden71 » Tue Mar 04, 2014 6:01 am

Soooo...pics of turbo L yet??

:fry:

:lol:
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Re: Turbo L series

#16

Post by z chopper » Tue Mar 04, 2014 10:14 am

jayden71 wrote:Soooo...pics of turbo L yet??

:fry:

:lol:
still waiting on parts

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Re: Turbo L series

#17

Post by Jester » Sat Jul 05, 2014 9:45 pm

A stock L20B has a static compression of 8.5:1 with a U67 head. If your going to put any serious boost to it you will at least want forged pistons. The L28 turbo pistons are 1mm over and will bring your static compression to 8.7:1. If your going to be pushing past the 10 pound point, you may want to think about O-ringing the block.

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Re: Turbo L series

#18

Post by z chopper » Sat Jul 05, 2014 10:02 pm

I am thinking like only 5 pounds of boost

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Re: Turbo L series

#19

Post by Jester » Mon Jul 07, 2014 12:15 am

5 lbs of boost will take you static of 8.7 and turn it to about 11.6.
Turbo's are cool. I have been reading some and really want to play with it on my truck down the road.

Good luck with yours. :thumbs:

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Re: Turbo L series

#20

Post by Jester » Mon Jul 07, 2014 12:17 am

Oh ya, this may be fun to play with too.

https://www.rbracing-rsr.com/compression.htm

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