fatz Posted December 31, 2011 Author Share Posted December 31, 2011 crank! Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6170876 Share on other sites More sharing options...
Gerg_R31 Posted January 1, 2012 Share Posted January 1, 2012 Paint and Welsh plugs Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6171237 Share on other sites More sharing options...
Gerg_R31 Posted January 1, 2012 Share Posted January 1, 2012 Rods torqued to specs with arp lube and checked for size, up to 1 thou smaller, quick hone and now they're on size Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6171325 Share on other sites More sharing options...
Gerg_R31 Posted January 2, 2012 Share Posted January 2, 2012 And the bottom end is done (minus the tensioner relocation) Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6172322 Share on other sites More sharing options...
fatz Posted January 2, 2012 Author Share Posted January 2, 2012 yea baby! i am starting to get excited about this heap of shit again Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6172336 Share on other sites More sharing options...
fatz Posted January 2, 2012 Author Share Posted January 2, 2012 top work greg above and beyond as always Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6172352 Share on other sites More sharing options...
johnbarry88 Posted January 3, 2012 Share Posted January 3, 2012 looking good pete getting exciting Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6172899 Share on other sites More sharing options...
fatz Posted January 3, 2012 Author Share Posted January 3, 2012 yea hopefully ill have alot more updates in teh comming months Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6173015 Share on other sites More sharing options...
bigmikespec Posted January 3, 2012 Share Posted January 3, 2012 (edited) What was the fitment of the block brace like and what is the reason for it? Just to tie in the bottom the stop flex? Edited January 3, 2012 by bigmikespec Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6173066 Share on other sites More sharing options...
fatz Posted January 3, 2012 Author Share Posted January 3, 2012 Well I hope the brace does something cause the cost of machining to make it fit 1000 percent was high. Greg can confirm how it fits though Does look purrty though Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6173072 Share on other sites More sharing options...
fatz Posted January 3, 2012 Author Share Posted January 3, 2012 It toughens up the bottom end Makes sense I guess especially when going a 3 liter with a modified Gtr sump that has bracing chopped out of it for a dry sump Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6173083 Share on other sites More sharing options...
Gerg_R31 Posted January 3, 2012 Share Posted January 3, 2012 Id assume the stock girdle strengthens to front to back flex, and this would strengthen the side flex but I'dsuggest to speak with platinum racing for more details on it, im aware they have 2 products 1 is the brace (purple) the other is a brace and awd conversion (blue) Sump rail and girdle are milled for exact height, the edges of the girdle are machined at an exact angle on a mill, 32 holes are drilled and tapped on the sump rail and girdle for it to bolt onto Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6173182 Share on other sites More sharing options...
Gerg_R31 Posted January 3, 2012 Share Posted January 3, 2012 Head cc'd at 69.6 cc's, aiming for 61.2 - 61.3 cc's 10 thou grind Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6173457 Share on other sites More sharing options...
fatz Posted January 3, 2012 Author Share Posted January 3, 2012 yea baby bump that compression up to the right amount Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6173517 Share on other sites More sharing options...
fatz Posted January 3, 2012 Author Share Posted January 3, 2012 at least this isnt another thread about a engine that the answer to everyone question is "secret spec" lol Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6173524 Share on other sites More sharing options...
Gerg_R31 Posted January 3, 2012 Share Posted January 3, 2012 Yeah but there is a good chance only 1 in 50 people will actually understand the details, which i have skipped some detail (i can add all the maths with all working out in as well if you like, would be a very long post ) Oh and I've ground 29 thou off so far, re cc'd it and its now at 64cc's which would make it 8.67:1CR (before with the 69.6 would have been 8.06:1CR) Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6173562 Share on other sites More sharing options...
fatz Posted January 3, 2012 Author Share Posted January 3, 2012 go maths crazy makes me feel smarter Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6173571 Share on other sites More sharing options...
BOZ22N Posted January 3, 2012 Share Posted January 3, 2012 Great stuff Greg I love it. Fatz your ok too hehe Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6173682 Share on other sites More sharing options...
BOZ22N Posted January 3, 2012 Share Posted January 3, 2012 And Fatz you think Skylines are high maintenance wait till the little one pokes it's head out omg they eat any spare time whole. I have an 11 week old and between work, house and him I am flat out and f**ked if I could tell you where all the time actually goes hehe but when they look, smile and laugh at you it's all worth it. Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6173693 Share on other sites More sharing options...
Gerg_R31 Posted January 3, 2012 Share Posted January 3, 2012 Well i took another 15 thou off, im at 62.1cc's ok the comp ratio maths SV bore x stroke 86.5 x 86.5 / 4 = 1870.5625 x 3.142 x 85 = 499,571.13688 / 1000 = 499.57113 (SV) Engine cc's 4.99.57113 x 6 = 2,997.42678cc's / 1000 = 2.99743 litre CV Head gasket 88 x 88 / 4 = 1936 x 3.142 x 1.2 = 7299.4944 / 1000 = 7.29949 Deck to top ring 86.5 x 86.5 / 4 = 1870.5625 x 3.142 x 6 = 35,263.84425 / 1000 = 35.26384 85.65 x 85.65 / 4 = 1833.98063 x 3.142 x 6 = 34,574.20284 / 1000 = 34.5742 35.26384 - 34.5742 = 0.68964 Piston dome volume 85.65 x 85.65 / 4 = 1833.98063 x 3.142 x 1.397 = 8,050.02689 / 1000 = 8.05003 Volume around dome measures 1.8cc's 8.05003 - 1.8 = 6.25 piston above deck height 85.65 x 85.65 / 4 = 1833.98063 x 3.142 x 0.1016 = 585.4565 / 1000 = 0.58546 7.29949 + 0.68964 - 6.25 - 0.58546 = 1.15367 + Head cc's 69.6 + 1.15367 = 70.75367 + 499.57113 = 570.3248 / 70.75367 = 8.06 :1 Also did 64cc's = 8.67:1 62 = 8.91:1 60 = 9.17:1 61 = 9.04:1 61.5 = 8.97:1 61.3 = 8.99:1 61.2 = 9.01:1 So that how i worked out it needed between 61.2 and 61.3 Link to comment https://www.sau.com.au/forums/topic/284232-fatz-goes-racing/page/29/#findComment-6173703 Share on other sites More sharing options...
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