Albert Donaldson Posted October 29, 2014 Share Posted October 29, 2014 Good morning All,After reading dva web page and being smitten by the lure of extra power I went ahead and purchased and fitted a K04 kit to my EU3 1600(1320 cams) +forged pistons. At the moment its running wideband in adaptive mode and I am pleased with the results so far, but am looking for a little more.I have a spare new standard head casting, piper springs and caps, 29mm inlets and 26mm exhaust valves, along with guides sitting in my garage and my thought process is running like this instead of having the present set up optimised now on the rolling road to do a bit of self porting on the head and later have the set up on the rolling road.After looking at the DVA website (thanks for the inspiring resource) along with some good postings on SELOC I have spent the last months slowly gathering the tools I think I will need.I am more interested in doing this for self satisfaction/learning experience than any money saving and hoping to gain some power, however I am finding that I lack the courage to start because of a couple of unanswered questions in my mind. So if anyone can answer I would be grateful.I wish to change to manual tensioner, anything to watch out for when drilling and tapping hole?I also believe I need to widen valve seat insert/throat-I have a set of neway cutters for the actual seat but I am struggling to see how to do a reasonably accurate job of increasing the inside diameter of the seat by hand-any tips on this appreciated.If anybody has done this themselves I would be interested to hear of the problems encountered and how they were resolved.Thank-youAlbert Link to comment Share on other sites More sharing options...
Ray Pearce Posted October 29, 2014 Share Posted October 29, 2014 I did this about 10 years ago. I was lucky enough to have Mr Oilyhands himself as mentor (he was still an "amateur" in those days. Dave ported one inlet and one exhaust for me and sent me away to tackle the other 14.As I recall, the trick was to have a set of old valves which you turned down to different diameters and then used these in turn to check that the throats were both circular and the right diameter. I'm sure that I had a VHS video of Dave demonstrating his techniques - possibly filmed by Bernard Scouse? I'll have a dig around to see if I still have it (and see if my VHS machine is still working) Link to comment Share on other sites More sharing options...
Myles Posted October 29, 2014 Share Posted October 29, 2014 I wish to change to manual tensioner, anything to watch out for when drilling and tapping hole? - See more at: http://www.lotus7.club/forum/techtalk/k-series-diy-head-porting#sthash.gvSohQQo.dpufYeah, drill it in the correct place! When we did my engine a decade ago, we didn't quite trust how close the manual position was to the auto tensioner hole - so opted to tap out the auto hole to the larger bolt size instead. It works fine - but you need a different length of belt and I've no idea if the belt covers would still fit without modification. Link to comment Share on other sites More sharing options...
David Brown Posted October 29, 2014 Share Posted October 29, 2014 There is a template somewhere on here or DVA's website. Not difficult from memory. Enjoyed doing the porting for the reasons you mentioned and results were terrific although, I'm sure, not as good as Oily would have done.Cannot comment on opening out the valves as didn't go that far, not wanting to go as far as replacing the pistons.Just go for it. Link to comment Share on other sites More sharing options...
Albert Donaldson Posted November 14, 2014 Author Share Posted November 14, 2014 Well got the bravery together*woohoo* and just started, check out my blog if interested for progress.... Link to comment Share on other sites More sharing options...
Ray Pearce Posted November 14, 2014 Share Posted November 14, 2014 I failed to find my copy of the porting video but I have discovered that it was filmed in 2001 by Lorne Mason and he sold copies of it via the se7ens.net list.Does anyone still have a copy knocking about? Link to comment Share on other sites More sharing options...
oilyhands Posted November 14, 2014 Share Posted November 14, 2014 He gave me several free copies as I was the main protagonist in the porting, like most VCRs in my household they are probably in the loft... I meant to convert them to DVD.Oily Link to comment Share on other sites More sharing options...
Albert Donaldson Posted November 15, 2014 Author Share Posted November 15, 2014 If one of these videos comes to light I would love to view it in exchange for preserving it on DVD. As an aside when I searched the interweb for the name of the gentleman who made the video in the hope of finding some more info I stumbled accros a "knitting circle" website that discussed this video and classes quite a lot with a lot of references to secret squirrels. Must have been strange times.... Link to comment Share on other sites More sharing options...
oilyhands Posted November 16, 2014 Share Posted November 16, 2014 Mmm.. I remember the knitting circle..I have read your blog, but I would be circumspect about clipping the inlet guides off, I push them back in the head to do the porting, I then mark their radial position, remove them, taper them and then refit, if this is done accurately the seats will still conform and be usable. You can clip the exhaust guides as there is very little metal removal involved.Oily Link to comment Share on other sites More sharing options...
Ray Pearce Posted December 7, 2014 Share Posted December 7, 2014 Following a huge spring (winter?) clean I have found my VHS copy of Lorne Masons videos.I have also dug out my VHS player and a video to USB adapter to digitally capture them. I have tried to contact Lorne to get permission to share them but haven't heard back from him - the email address I am using is 13 years old so he might not still be using it. Does anybody have current contact details for him? Link to comment Share on other sites More sharing options...
oilyhands Posted December 7, 2014 Share Posted December 7, 2014 Lorne's address as of 02/14lorne@spam.spamOily Link to comment Share on other sites More sharing options...
Ray Pearce Posted December 7, 2014 Share Posted December 7, 2014 Thanks Dave, email sent - could you edit your post to save Lorne from spam?p.s. I'd forgotten about the shorts and the way you used your finger in the ports Link to comment Share on other sites More sharing options...
Ray Pearce Posted December 8, 2014 Share Posted December 8, 2014 I have Lornes blessing to share the videos. I have captured the head modification tape (2hr 50mins) but the raw capture runs to 6GB so I am playing with HandBrake to see if I can get it to a reasonable size while retaining the current video quality. Remember that these are from 13 year old VHS tapes - not the latest HD GoPro.Would I be able to host them on this website? I notice that if I upload a picture it says that I have an unlimited quota - wonder what will happen if I rename a 2 GB MPEG as a JPEG and try the upload... Link to comment Share on other sites More sharing options...
oilyhands Posted December 8, 2014 Share Posted December 8, 2014 Doesn't my cat feature in the video somewhere?Oily Link to comment Share on other sites More sharing options...
Ray Pearce Posted December 8, 2014 Share Posted December 8, 2014 I'm fairly sure it was only the ports that you put your finger in. Link to comment Share on other sites More sharing options...
Superwhite R283 Posted December 8, 2014 Share Posted December 8, 2014 Not sure about here but dropbox would work http://www.dropbox.com Link to comment Share on other sites More sharing options...
Mankee Posted December 8, 2014 Share Posted December 8, 2014 This sounds like it might be an interesting video to watch!Dropbox seems to let you have 2GB for dree, although it is easy to get a bit more free space if the video is larger. Does YouTube have a file size or video duration limit? Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted December 8, 2014 Member Share Posted December 8, 2014 128 GB and 11h, but you have to do a bit of work to be allowed that.Jonathan Link to comment Share on other sites More sharing options...
Ray Pearce Posted December 10, 2014 Share Posted December 10, 2014 OK - if you want to see Dave finger in action (and his cat) in super low definitionDropbox Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted December 10, 2014 Member Share Posted December 10, 2014 Are they Siamesed, then?Jonathan Link to comment Share on other sites More sharing options...
Albert Donaldson Posted December 11, 2014 Author Share Posted December 11, 2014 Gentlemen,Thank-you very much for the efforts you have made to make this accessable, I can now compare my ham fisted efforts with what should have been.Much appreciatedAlbert. Link to comment Share on other sites More sharing options...
Superwhite R283 Posted December 11, 2014 Share Posted December 11, 2014 Thanks Link to comment Share on other sites More sharing options...
Ray Pearce Posted December 12, 2014 Share Posted December 12, 2014 Hmm - it seems that DropBox give you 2GB free but will ban your links if you generate more than 20GB traffic in a day. They don't publicise that limit particularly well.Apologies to the 19th person who tried to download the vid. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted December 11, 2015 Member Share Posted December 11, 2015 "The file you’re looking for has been moved or deleted."It would be great if someone could get these working again.ThanksJonathan Link to comment Share on other sites More sharing options...
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