turbobluestreak Posted April 20, 2003 Share Posted April 20, 2003 check out what was made for the L28's in the 70's http://www.datrats.com.au/O.S._GIKEN_TG-24_-1.jpg http://www.datrats.com.au/OS6MOD.jpg WOW I would like to find this company and talk with them about reproducing this head, if it would be able to be reproduced would anyone want to own one? Please let me know so I can let the company know of a list of intested buyers. tbs Quote Link to comment Share on other sites More sharing options...
Guest eric-z Posted April 20, 2003 Share Posted April 20, 2003 there is a good sized thread about that head, check it out... http://www.hybridz.org/phpBB2/viewtopic.php?t=14428 eric Quote Link to comment Share on other sites More sharing options...
HS30-H Posted April 20, 2003 Share Posted April 20, 2003 Please don't get too excited about this just yet.............. O.S.GIKEN are not interested in making any more TC24-B1 heads anytime soon. Many people have been trying to persuade them for many a year ( with me amongst them ) but the high re-tooling costs would make it just too expensive. With a high price, not many people are going to be buying them, and OSG are therefore not going to play ball. The cores for the moulds and all the original tooling are not in very good shape, and there's a hell of a lot of it. Just think of the complexity of all the castings, as well as the parts such as the exhaust manifolds, cams, followers, valves, timing chain & sprockets etc etc. The design even called for special pistons........... O.S.GIKEN are a medium-sized company that specialise in trick drivetrain parts for Japanese cars. They are doing very well in their specialised field, and have all the work they need at the moment. I'm afraid that they are not going to be very receptive to any request from you to remake a batch of the TC24-B1 conversions. Many Japanese enthusiasts have been lobbying them for years - but OSG are adamant that they will not do it. Even if they DID - it would be enormously expensive in Yen, let alone Dollars ( or for me - Pounds Sterling ). If you think that I might not know what I'm talking about, then have a look at the "credits" for the pictures on that website you posted links to. I supplied those pictures myself from my own literature collection ( the "TG" prefix in the magazine article is a mistake by the way - it is "TC" for Twin Cam ). I don't want to pee on your barbecue, and I admire you for having the get-up-and-go to try and organise this, but I don't think its a good idea to get everyone excited over such a very very remote possibility. There's still a big following for tuned L6 engines in Japan, and the TC24 would be very welcome if it made a return. I'm afraid you're walking in on a conversation that has already been concluded......... Frankly, getting something made in the USA is going to be a much more likely scenario. Good luck, Alan T. ( eternal pessimist ). Quote Link to comment Share on other sites More sharing options...
turbobluestreak Posted April 20, 2003 Author Share Posted April 20, 2003 hey alan do you know what the email for OS giken or thier web page is?? tbs Quote Link to comment Share on other sites More sharing options...
HS30-H Posted April 20, 2003 Share Posted April 20, 2003 As far as I am aware, they do not have their own website. Here are their contact details: OS GIKEN CO. LTD. tel: ( 086 ) 277 6609 fax: ( 086 ) 277 8115 Good luck, Alan T. Quote Link to comment Share on other sites More sharing options...
David K Posted April 20, 2003 Share Posted April 20, 2003 Its a cool head, but ive seen numbers in person and it doesnt do that much compared to a stock L series head..........for that amount of $$$. The cool thing going for it is that its a corss flow head, something the stock L series head isnt. Quote Link to comment Share on other sites More sharing options...
fl327 Posted April 21, 2003 Share Posted April 21, 2003 the real trick to the L motor is to never take the head off, bolt em in,and force air down its throat in a major way, i promise you, youll never trip off a crossflow head again. Quote Link to comment Share on other sites More sharing options...
Guest zline Posted May 2, 2003 Share Posted May 2, 2003 you'd gain only about 5% with a crossflow head on a non turbo n/a high comp Z...on a turbo the gains are still 5% but a bit higher in number due to the higher base number. By the time you've spent money for good porting, fully setup valvetrain, a great custom cam for what your application is, prepped rods, a prepped crank, AND all the machine work you still havent reached the price you'd pay for JUST a crossflow head. IMO, tbs, making the crossflow head is a great idea but just not worth the expense - all the R&D costs would boost the product price up so high that nobody would buy it. Not to mention the fact that its outlawed in club racing. Quote Link to comment Share on other sites More sharing options...
johnc Posted May 3, 2003 Share Posted May 3, 2003 When you can get 100hp per liter out of a normally aspirated N42 head why go to the expense of the OS Giken? Quote Link to comment Share on other sites More sharing options...
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