gerg 10,871 Posted July 28, 2013 I've found they usually have a telltale around the headbolt seats if they're slightly recessed the head has been way overheated and is usually warped to the shit house, au's run a different head bolt and I can't recommend anything better to use in any 4.0 (as well au head gasket) That's a handy one to know. Also, I'm not sure about e-series but crossies take a Holden 308 head stud. Share this post Link to post Share on other sites
Thom 6,651 Posted July 28, 2013 E series are longer, and being a torque to yeild bolt can only be used once then they have to be thrown away Share this post Link to post Share on other sites
Thom 6,651 Posted July 28, 2013 Also they are metric 1 gerg reacted to this Share this post Link to post Share on other sites
dizzy616 183 Posted July 28, 2013 hey would i be able to close of the holes for the fuel injectors. then stick the gas on the front of the manifold on a eb where i noticed they have a rubber grommet covering the spot on some. looks the perfect size to get my gas hose onto from the mixer. or another idea was to use a centrepoint injection manifold take the top off it and stick the weber on it would that be do able? Share this post Link to post Share on other sites
GspecZL 979 Posted July 28, 2013 Had my Parts car (ZH marquis) running today and realised it has a B2 converter. Its some Brand called Aussie. Any way i assume that will work with my Impco 425. Also has a Gas hat an a few other bits and pieces i can use. Unfortunatly it is using a thermoquad so i can pinch the carb. Share this post Link to post Share on other sites
deankxf 20,292 Posted July 28, 2013 Had my Parts car (ZH marquis) running today and realised it has a B2 converter. Its some Brand called Aussie. Any way i assume that will work with my Impco 425. Also has a Gas hat an a few other bits and pieces i can use. Unfortunatly it is using a thermoquad so i can pinch the carb. if its got a 300a mixer(likely) you can also mount them on a holley base via adaptor and should also be good for a 4 litre like this one.. sold already(was cheap too) http://www.ebay.com.au/itm/Impco-300A-LPG-Mixer-Gas-Carburettor-with-4BBL-Base-Plate-v8-b2-converter-/151049736720 Share this post Link to post Share on other sites
deankxf 20,292 Posted July 28, 2013 if its got a 300a mixer(likely) you can also mount them on a holley base via adaptor and should also be good for a 4 litre like this one.. sold already(was cheap too) http://www.ebay.com.au/itm/Impco-300A-LPG-Mixer-Gas-Carburettor-with-4BBL-Base-Plate-v8-b2-converter-/151049736720 can also probably mount it on a CPI manifold with adaptor also and i also have seen them mounted on a efi type intake with adaptors also.. depends how much mucking around you want and what you really want? manifold wise, cost etc. Share this post Link to post Share on other sites
gerg 10,871 Posted July 28, 2013 hey would i be able to close of the holes for the fuel injectors. then stick the gas on the front of the manifold on a eb where i noticed they have a rubber grommet covering the spot on some. looks the perfect size to get my gas hose onto from the mixer. or another idea was to use a centrepoint injection manifold take the top off it and stick the weber on it would that be do able? Speedway blokes use the CFI manifold on crossies, but I reckon the std 3.9-4.0 EFI log manifold would be superior for LPG, with much bigger plenum volume. Share this post Link to post Share on other sites
GspecZL 979 Posted July 28, 2013 Ive got a 425 and base plate coming next sunday. Just need the manifold and oh the motor! Share this post Link to post Share on other sites
dizzy616 183 Posted July 28, 2013 ok i got a eb log manifold. so what would you guys plug the injector holes up with? and do you guys think it would be allright to just connect the convertor up to the throttle body and just before the air cleaner plastic bit. Share this post Link to post Share on other sites
revhead 1,392 Posted July 28, 2013 see if you can buy small welsh plugs to knock into the injector holes,most lpg log gas rings went in between the air filter and throttle body Share this post Link to post Share on other sites
dizzy616 183 Posted July 28, 2013 cool as. and yeh just to make sure we are on the same page this is where im thinking of hooking the gas line up too. Share this post Link to post Share on other sites
xeeclipse 37 Posted July 28, 2013 If you want to cam it in the future your probably better off with a log styled aftermarket or CFI manifold. You lose alot of air speed with the large plenum.....I'm just speaking from my own experience. Share this post Link to post Share on other sites
revhead 1,392 Posted July 28, 2013 you can hook it up the vacuum pipe i did it on my lpg 302w L300 i think personally a gas ring mixer would give you better performance ,do you want me to post you one, Share this post Link to post Share on other sites
xeeclipse 37 Posted July 28, 2013 A Gas ring isn't advisable if your gonna run a cam, I'd go for a mixer style setup cause it's more vacuum sensitive and does away with flat spots. Share this post Link to post Share on other sites
dizzy616 183 Posted July 28, 2013 got a picture revhead im interested but need to clarify what your talking about these newer things im still learning on Share this post Link to post Share on other sites
revhead 1,392 Posted July 28, 2013 il post it up tomorrow for ya Diz,it fits in,front of the throttle body. Share this post Link to post Share on other sites
revhead 1,392 Posted July 28, 2013 picture for reference Share this post Link to post Share on other sites
dizzy616 183 Posted July 28, 2013 cool as thankyou rev Share this post Link to post Share on other sites
dizzy616 183 Posted July 28, 2013 ohyeh so that will fit on the front of a log manifold? Share this post Link to post Share on other sites
revhead 1,392 Posted July 28, 2013 basically its mounnted using rubber pipe like a turbo pipe ,colour of your choice then onto the air box or pod Share this post Link to post Share on other sites
xeeclipse 37 Posted July 28, 2013 I think I might look for a good 4L myself soon. Still got a mint low km DA 87 sitting at home but some RND on newer technology never hurt anyone. Share this post Link to post Share on other sites
dizzy616 183 Posted July 28, 2013 where would you get the rubber pipe and how much for the device revhead Share this post Link to post Share on other sites
gerg 10,871 Posted July 28, 2013 Injector holes: if you can't find welsh plugs to suit, you could drill and tap for BSP/NPT Allen key plugs. 1 revhead reacted to this Share this post Link to post Share on other sites
revhead 1,392 Posted July 28, 2013 Injector holes: if you can't find welsh plugs to suit, you could drill and tap for BSP/NPT Allen key plugs. great idea Gerg! try super cheap Diz! Share this post Link to post Share on other sites
