<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Yes, you’re right about the breathing. Sure, a twin plenum would be nice - where did you see it?<div class="">If you want to run without cats you could use the English exhaust system, or at least the downpipes which give you some extraction. I used a plenum from an early fuel injected Range Rover - I got it used in England I think at the SD1 club spares day.</div><div class="">I still have a lot of new SD1 parts plus 2 parts cars.</div><div class=""><br class=""></div><div class="">Dermot Harvey</div><div class=""> Spectral Kinetics</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Mar 7, 2016, at 3:41 PM, GeffMcCarthy via Rovernet <<a href="mailto:rovernet@rovernet.org" class="">rovernet@rovernet.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">Thanks, Dermot. I also have read that the SD1 breathing is restricted<br class="">severely. A Vitesse twin plenum was advertised a few months back, and sold<br class="">for £800! I plan to investigate throttle body injection on an Edelbrock<br class="">manifold, or similar. <br class=""><br class=""><br class=""><br class="">AvMedSafe<br class=""><br class="">Geoffrey W. McCarthy MD MBA DipAvMed<br class=""><br class="">677 NW Melinda Ave Portland OR USA 97210<br class=""><br class="">503-241-8468(h) 503-799-3809 (mobile)<br class=""><br class=""><br class=""><br class="">-----Original Message-----<br class="">From: Rovernet [<a href="mailto:rovernet-bounces@rovernet.org" class="">mailto:rovernet-bounces@rovernet.org</a>] On Behalf Of Dermot<br class="">Harvey via Rovernet<br class="">Sent: Monday, March 07, 2016 10:59 AM<br class="">To: Rovernet <<a href="mailto:rovernet@rovernet.org" class="">rovernet@rovernet.org</a>><br class="">Cc: Dermot Harvey <<a href="mailto:roverman2@verizon.net" class="">roverman2@verizon.net</a>><br class="">Subject: Re: [Rovernet] 3.5 to 3.9?<br class=""><br class=""><br class=""><br class="">Hi Geoffrey,<br class=""><br class=""><br class=""><br class="">I think you would be better off with one of the larger iterations of the<br class="">Rover V8. such as the 3.9 or 4.2 Liter. I have both engines used in stock<br class="">if you are interested.<br class=""><br class="">Alternately, you could have your present motor upgraded in power by using<br class="">higher compression pistons, a more radical camshaft and improvements to your<br class="">Fuel Injection mapping. This is what I did with my SD1 when I rebuilt the<br class="">motor some years ago. The car is now no slouch and is an excellent Grand<br class="">Touring car for fast longer journeys. Still prefer my 1971 2000TC for<br class="">running around the County.<br class=""><br class=""><br class=""><br class="">Best,<br class=""><br class=""><br class=""><br class="">Dermot Harvey<br class=""><br class="">Spectral Kinetics<br class=""><br class=""><br class=""><br class=""><br class=""><br class=""><br class=""><br class=""><blockquote type="cite" class="">On Feb 29, 2016, at 6:46 PM, Brian Thornhill via Rovernet <<br class=""></blockquote><<a href="mailto:rovernet@rovernet.org" class="">mailto:rovernet@rovernet.org</a>> <a href="mailto:rovernet@rovernet.org" class="">rovernet@rovernet.org</a>> wrote:<br class=""><br class=""><blockquote type="cite" class=""><br class=""></blockquote><br class=""><blockquote type="cite" class="">Being a Land Rover tech for 17 years and working with these motors for<br class=""></blockquote>many years I am not a fan of boring them as you tend to break the seal loose<br class="">between the sleeve and the block I have sourced a few good 3.9 and 4.6<br class="">blocks for guys with TR8's they work well if you ant to stay with that block<br class="">contact The Wedge Shop they can help you.<br class=""><br class=""><blockquote type="cite" class=""><br class=""></blockquote><br class=""><blockquote type="cite" class="">Please excuse errors and format this email sent from iPhone<br class=""></blockquote><br class=""><blockquote type="cite" class=""><br class=""></blockquote><br class=""><blockquote type="cite" class=""><br class=""></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">On Feb 29, 2016, at 3:21 PM, GeffMcCarthy via Rovernet <<br class=""></blockquote></blockquote><<a href="mailto:rovernet@rovernet.org" class="">mailto:rovernet@rovernet.org</a>> <a href="mailto:rovernet@rovernet.org" class="">rovernet@rovernet.org</a>> wrote:<br class=""><br class=""><blockquote type="cite" class=""><blockquote type="cite" class=""><br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">I am still looking for more thrust for my 1970 3500S and 1980SD1. Is <br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">it feasible, and reasonably priced, to bore the 3.5 to the 3.9? I <br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">understand the crankshaft remains the same.<br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class=""><br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class=""><br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class=""><br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">AvMedSafe<br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class=""><br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">Geoffrey W. McCarthy MD MBA DipAvMed<br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class=""><br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">677 NW Melinda Ave Portland OR USA 97210<br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class=""><br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">503-241-8468(h) 503-799-3809 (mobile)<br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class=""><br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class=""><br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class=""><br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">-------------- next part -------------- An HTML attachment was <br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">scrubbed...<br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">URL: <br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class=""><<a href="http://rovernet.org/pipermail/rovernet_rovernet.org/attachments/2016" class="">http://rovernet.org/pipermail/rovernet_rovernet.org/attachments/2016</a><br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">0229/8be6d02b/attachment.html> <br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">_______________________________________________<br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">Rovernet mailing list<br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class=""> <<a href="mailto:Rovernet@rovernet.org" class="">mailto:Rovernet@rovernet.org</a>> <a href="mailto:Rovernet@rovernet.org" class="">Rovernet@rovernet.org</a><br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class=""> <<a href="http://rovernet.org/mailman/listinfo/rovernet_rovernet.org" class="">http://rovernet.org/mailman/listinfo/rovernet_rovernet.org</a>><br class=""></blockquote></blockquote><a href="http://rovernet.org/mailman/listinfo/rovernet_rovernet.org" class="">http://rovernet.org/mailman/listinfo/rovernet_rovernet.org</a><br class=""><br class=""><blockquote type="cite" class=""><br class=""></blockquote><br class=""><blockquote type="cite" class="">_______________________________________________<br class=""></blockquote><br class=""><blockquote type="cite" class="">Rovernet mailing list<br class=""></blockquote><br class=""><blockquote type="cite" class=""> <mailto:Rovernet@rovernet.org> Rovernet@rovernet.org<br class=""></blockquote><br class=""><blockquote type="cite" class=""> <http://rovernet.org/mailman/listinfo/rovernet_rovernet.org><br class=""></blockquote>http://rovernet.org/mailman/listinfo/rovernet_rovernet.org<br class=""><br class=""><br class=""><br class="">-------------- next part --------------<br class=""><br class="">An HTML attachment was scrubbed...<br class=""><br class="">URL: <<br class=""><http://rovernet.org/pipermail/rovernet_rovernet.org/attachments/20160307/c4<br class="">d1618c/attachment.html><br class="">http://rovernet.org/pipermail/rovernet_rovernet.org/attachments/20160307/c4d<br class="">1618c/attachment.html><br class=""><br class="">_______________________________________________<br class=""><br class="">Rovernet mailing list<br class=""><br class=""> <mailto:Rovernet@rovernet.org> Rovernet@rovernet.org<br class=""><br class=""> <http://rovernet.org/mailman/listinfo/rovernet_rovernet.org><br class="">http://rovernet.org/mailman/listinfo/rovernet_rovernet.org<br class=""><br class="">-------------- next part --------------<br class="">An HTML attachment was scrubbed...<br class="">URL: <http://rovernet.org/pipermail/rovernet_rovernet.org/attachments/20160307/d7d6983f/attachment.html><br class="">_______________________________________________<br class="">Rovernet mailing list<br class="">Rovernet@rovernet.org<br class="">http://rovernet.org/mailman/listinfo/rovernet_rovernet.org<br class=""></div></div></blockquote></div><br class=""></div></body></html>