Jump to content
Welcome Guest! Please read more information about our club!

New l 28 for my 72

Diseazd
Diseazd
in Engine & Drivetrain

Featured Replies

  • Author
comment_290595
Carl......I've got your answer. Go to www.datsunzgarage.com click performance tip, then under heads, click the underlined P 79. This guy worked with the Z Doctor and has built and discusses the identical engine to my first build. He mentioned that he cc'd that identical P 79 .080 cut and shimmed head and got a reduction to 46cc chamber volume. Now you can tell me what my 1mm overbore will give me as a CR. I appreciate your help. If I did my numbers right, with the stock gasket that would be 9.9645 to 1 on the 1mm overbore. Guy

Greg.....Carl and I tried to figure that already.


comment_290606
Rebello knows what they're talking about (obviously)........Here's a good web-site with a wealth of info. He discusses the P79 and what he's found regarding the exhaust liners (he doesn't think they are very restrictive). The headers look great! Good Luck! http://www.datsunzgarage.com/

The info on this site is part of the reason I'm leaning towards sticking with the P79, but it's nice to hear opinions and experiences of others. I'd love to hear yours regarding your other build.

  • Author
comment_290608

It's an absolute joy to drive.....The engine dynoed at 160 rear wheel H.P. (190 flyheel H.P.) The P79 is a great flowing head, even with the liners.Remember, if you want to run SU's, you'll have to drill out the fuel pump opening (I got a machine shop to do that). If I were you and already owned the P79 head, I'd go with it! Guy

comment_291148

Here are some updated photos of Diseazd's engine

<a href="http://www.flickr.com/photos/14049800@N00/3789570733/" title="IMG_3798 by RVAE34, on Flickr"><img src="http://farm3.static.flickr.com/2040/3789570733_75649deb13_b.jpg" width="1024" height="684" alt="IMG_3798" /></a>

<a href="http://www.flickr.com/photos/14049800@N00/3790385198/" title="IMG_3799 by RVAE34, on Flickr"><img src="http://farm3.static.flickr.com/2629/3790385198_dd545f93cc_b.jpg" width="684" height="1024" alt="IMG_3799" /></a>

<a href="http://www.flickr.com/photos/14049800@N00/3790385768/" title="IMG_3801 by RVAE34, on Flickr"><img src="http://farm3.static.flickr.com/2457/3790385768_76a3403c2e_b.jpg" width="1024" height="684" alt="IMG_3801" /></a>

<a href="http://www.flickr.com/photos/14049800@N00/3789572211/" title="IMG_3802 by RVAE34, on Flickr"><img src="http://farm4.static.flickr.com/3424/3789572211_91cd8c9655_b.jpg" width="1024" height="684" alt="IMG_3802" /></a>

<a href="http://www.flickr.com/photos/14049800@N00/3789572907/" title="IMG_3803 by RVAE34, on Flickr"><img src="http://farm3.static.flickr.com/2008/3789572907_fc55898cac_b.jpg" width="1024" height="684" alt="IMG_3803" /></a>

<a href="http://www.flickr.com/photos/14049800@N00/3790387622/" title="IMG_3805 by RVAE34, on Flickr"><img src="http://farm3.static.flickr.com/2534/3790387622_38a453bc39_b.jpg" width="1024" height="684" alt="IMG_3805" /></a>

<a href="http://www.flickr.com/photos/14049800@N00/3790388130/" title="IMG_3806 by RVAE34, on Flickr"><img src="http://farm3.static.flickr.com/2448/3790388130_9c11849ceb_b.jpg" width="1024" height="684" alt="IMG_3806" /></a>

<a href="http://www.flickr.com/photos/14049800@N00/3789574615/" title="IMG_3807 by RVAE34, on Flickr"><img src="http://farm3.static.flickr.com/2538/3789574615_bc553b00e4_b.jpg" width="1024" height="684" alt="IMG_3807" /></a>

  • 4 weeks later...
comment_293119

<a href="http://www.flickr.com/photos/14049800@N00/3863571542/" title="IMG_4195 by RVAE34, on Flickr"><img src="http://farm3.static.flickr.com/2588/3863571542_abe80c3d67_b.jpg" width="684" height="1024" alt="IMG_4195" /></a>

<a href="http://www.flickr.com/photos/14049800@N00/3863570160/" title="IMG_4197 by RVAE34, on Flickr"><img src="http://farm3.static.flickr.com/2506/3863570160_e3209f5d74_b.jpg" width="1024" height="684" alt="IMG_4197" /></a>

<a href="http://www.flickr.com/photos/14049800@N00/3862787937/" title="IMG_4196 by RVAE34, on Flickr"><img src="http://farm3.static.flickr.com/2513/3862787937_d39f154fd5_b.jpg" width="1024" height="684" alt="IMG_4196" /></a>

<a href="http://www.flickr.com/photos/14049800@N00/3863569378/" title="IMG_4194 by RVAE34, on Flickr"><img src="http://farm3.static.flickr.com/2472/3863569378_ac27262778_b.jpg" width="1024" height="684" alt="IMG_4194" /></a>

  • 9 months later...
comment_321108

So the L24 came out and the L28 finally made it's way into the 72 this weekend. I am actually not sure if the engine above is the same one as the one we installed yesterday though. He has so many I can't keep track :)

<a href="http://www.flickr.com/photos/14049800@N00/4651416538/" title="IMG_8521 by RVAE34, on Flickr"><img src="http://farm5.static.flickr.com/4009/4651416538_d9d25a2c2d_b.jpg" width="1024" height="684" alt="IMG_8521" /></a>

<a href="http://www.flickr.com/photos/14049800@N00/4651415998/" title="IMG_8520 by RVAE34, on Flickr"><img src="http://farm5.static.flickr.com/4040/4651415998_1f6b36c2f8_b.jpg" width="1024" height="684" alt="IMG_8520" /></a>

<a href="http://www.flickr.com/photos/14049800@N00/4651417894/" title="IMG_8526 by RVAE34, on Flickr"><img src="http://farm5.static.flickr.com/4071/4651417894_8e2bf06444_b.jpg" width="1024" height="684" alt="IMG_8526" /></a>

<a href="http://www.flickr.com/photos/14049800@N00/4651418332/" title="IMG_8527 by RVAE34, on Flickr"><img src="http://farm5.static.flickr.com/4040/4651418332_a306568d2c_b.jpg" width="1024" height="684" alt="IMG_8527" /></a>

<a href="http://www.flickr.com/photos/14049800@N00/4650800987/" title="IMG_8535 by RVAE34, on Flickr"><img src="http://farm4.static.flickr.com/3399/4650800987_f0989f0a2a_b.jpg" width="1024" height="684" alt="IMG_8535" /></a>

<a href="http://www.flickr.com/photos/14049800@N00/4651427350/" title="IMG_8558 by RVAE34, on Flickr"><img src="http://farm5.static.flickr.com/4011/4651427350_6800d860c8_b.jpg" width="1024" height="684" alt="IMG_8558" /></a>

<a href="http://www.flickr.com/photos/14049800@N00/4651427890/" title="IMG_8560 by RVAE34, on Flickr"><img src="http://farm5.static.flickr.com/4023/4651427890_cddb86388a_b.jpg" width="1024" height="684" alt="IMG_8560" /></a>

<a href="http://www.flickr.com/photos/14049800@N00/4650810125/" title="IMG_8559 by RVAE34, on Flickr"><img src="http://farm5.static.flickr.com/4065/4650810125_bb436840a8_b.jpg" width="1024" height="684" alt="IMG_8559" /></a>

  • Author
comment_321144

The first 3 pics above are of the L24 coming out........the rest are of the L28 going in. Yes it is the same engine as in the rest of the pics, The engine runs great.....I'll post final dyno results sometime in the next few weeks. Guy

Create an account or sign in to comment

Go to topic listing

Important Information

By using this site, you agree to our Privacy Policy and Guidelines. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.