high performance L18?

New posts disabled. Archived technical discussion about the Datsun PL510
badgti
Posts: 21
Joined: 10 Nov 2007 17:13

high performance L18?

Postby badgti » 13 Nov 2007 06:32

guys,

how do i go about building a performance L18 engine that i can use for trackdays?i plan on using 40dcoes on the L18, but have not much idea on wht other mods i need..

User avatar
Dimebag
Posts: 683
Joined: 03 Mar 2007 20:39
Location: Abbotsford, BC

RE: high performance L18?

Postby Dimebag » 13 Nov 2007 08:10

I know a guy who is selling a Specialty Engineering turbo L18. He had it built years ago and I don't think he ever got around to actually assembling it. 510ROB might know the specs on it. The components are in Vancouver BC.
John Thiessen
72 Wagon

User avatar
heirfaus
Posts: 2173
Joined: 30 Jan 2005 23:30
Location: Portland, OR

Postby heirfaus » 13 Nov 2007 08:17

Turbo L18, sounds fun :twisted:

My opinion is that unless you have a turbo L series, you should swap if you want a track day car. IMHO that is..........
"An intercooler...has never been, nor should ever be, considered icing on the cake. A proper intercooler is more cake."
Corky Bell, Maximum Boost

"one of the little things that add up"
-defdes

User avatar
okayfine
Supporter
Posts: 14125
Joined: 12 Nov 2007 23:02
Location: Newbury Park, CA

Re: high performance L18?

Postby okayfine » 13 Nov 2007 08:41

badgti wrote:guys,

how do i go about building a performance L18 engine that i can use for trackdays?i plan on using 40dcoes on the L18, but have not much idea on wht other mods i need..


What is your budget? What are your expectations? What are your abilities?

badgti
Posts: 21
Joined: 10 Nov 2007 17:13

RE: Re: high performance L18?

Postby badgti » 13 Nov 2007 16:26

i prefer a worked n/a l18 ,with high revving capabilities rather than a turbo as i have a evo 2'd colt and since i bought the 510 ,was really keen on building a complete replica of the BRE510 for daily use and weekend curcuit.

Derek
Posts: 1330
Joined: 04 Jul 2003 17:19
Location: San Francisco, CA

Postby Derek » 13 Nov 2007 18:41

heirfaus wrote:Turbo L18, sounds fun :twisted:

My opinion is that unless you have a turbo L series, you should swap if you want a track day car. IMHO that is..........


Funny, my NA L18 kept up with E30 M3s and (slowly driven) S2000s at Horse Thief Mile...

510rob
Moderator
Posts: 4558
Joined: 09 Oct 2003 23:37
Location: Vancouver, BC
Contact:

Postby 510rob » 13 Nov 2007 19:32

Dimebag wrote:I know a guy who is selling a Specialty Engineering turbo L18. He had it built years ago and I don't think he ever got around to actually assembling it. 510ROB might know the specs on it. The components are in Vancouver BC.


A turbo L18 with the old Engine Air turbo kit (based on the 3ld-168.68 spec turbo) should make ~185HP at the wheels.

badgti
Posts: 21
Joined: 10 Nov 2007 17:13

Postby badgti » 14 Nov 2007 08:04

if for high revving n/a setup wht would be neede to be done in the engine other than balancing bottom end, are there any ways i can get the l18 to perform wit the twin 40dcoe's i hve?

510rob
Moderator
Posts: 4558
Joined: 09 Oct 2003 23:37
Location: Vancouver, BC
Contact:

Postby 510rob » 14 Nov 2007 08:50

In the grand scheme of things, twin 40s arenn't very big at all and make a perfectly streetable (although thirsty) setup.

You should define what you imply by "high revving" because that means 6000rpm to some people, 7000rpm to others, and 8000+ to others

User avatar
Dimebag
Posts: 683
Joined: 03 Mar 2007 20:39
Location: Abbotsford, BC

Postby Dimebag » 14 Nov 2007 09:47

Christmas is coming... THIS BOOK is at the very top of my wish list, and it sound like a good read-through would benefit others around here too.
John Thiessen
72 Wagon

510rob
Moderator
Posts: 4558
Joined: 09 Oct 2003 23:37
Location: Vancouver, BC
Contact:

Postby 510rob » 14 Nov 2007 09:59

There was a copy of that 1st edition on E-Bay a few weeks ago that sold for about $15...

There are two versions of that book.

1st edition = How To Modify Datsun Engines and Chassis
2nd edition = How To Modify and Race your Datsun

The 1st edition had the excellently written camshaft article penned by Racer Brown, 42 pages in total. The 2nd edition has the same camshaft article, only it's the massively abridged version which is too bad...

bigjim5551212
Posts: 220
Joined: 22 Nov 2005 15:36
Location: vancouver
Contact:

Postby bigjim5551212 » 14 Nov 2007 20:09

I have an original. I had a mint condition one some years ago that I sold on Ebay for 65 bux
"He forgot more than what i know about a Datsun"

User avatar
hang_510
Supporter
Posts: 5342
Joined: 14 Mar 2005 16:19
Location: so. cal

Postby hang_510 » 14 Nov 2007 21:03

i bought the red wagon i had from 'bob waar' (say it w/ a red neck drawl), could find my copy before he moved :evil:

got an L18 with it (is that on topic :?: )

User avatar
Rehs
Posts: 524
Joined: 20 Mar 2006 21:54
Location: Richmond, B.C.

Re: RE: Re: high performance L18?

Postby Rehs » 17 Nov 2007 13:07

badgti wrote:if for high revving n/a setup wht would be neede to be done in the engine other than balancing bottom end, are there any ways i can get the l18 to perform wit the twin 40dcoe's i hve?


Longer Rods and Short Flat Top Pistons with valve reliefs... Bore it out at least 0.040"-0.080" over for less shrouding of the 44/38mm valves you're going to have installed in the head while you get it crazy ported. Racer Brown #391-R Cam, with components to match, max effort and lightweight everything valvetrain w/spray bar... Properly balanced and blueprinted bottom end, with a comp header and good free-flowing exhaust... what do you think? You think those DCOE40s he has, with some big chokes, would be good enough for 9,000RPMs? Probably need more carburetion.

badgti
Posts: 21
Joined: 10 Nov 2007 17:13

Re: RE: Re: high performance L18?

Postby badgti » 17 Nov 2007 15:26

Rehs wrote:
badgti wrote:if for high revving n/a setup wht would be neede to be done in the engine other than balancing bottom end, are there any ways i can get the l18 to perform wit the twin 40dcoe's i hve?


Longer Rods and Short Flat Top Pistons with valve reliefs... Bore it out at least 0.040"-0.080" over for less shrouding of the 44/38mm valves you're going to have installed in the head while you get it crazy ported. Racer Brown #391-R Cam, with components to match, max effort and lightweight everything valvetrain w/spray bar... Properly balanced and blueprinted bottom end, with a comp header and good free-flowing exhaust... what do you think? You think those DCOE40s he has, with some big chokes, would be good enough for 9,000RPMs? Probably need more carburetion.


40dcoe's are not enuf for 9k rpms? currently i am trying to source for the l28e n.a pistons that are supposed to be flat-tops rite?but they're hard to come by .wht kind of compression will i roughly get if i use a thinner headgasket(i can get metal headgaskets) 0.7mm and just shave the head 0.4mm off?


Return to “Technical - Archive”



Who is online

Users browsing this forum: No registered users and 2 guests