Isuzu G-series Twin Cam

more power means more magnetic force. power is watts and watts is volts * amps. So assuming the car voltage is sitting at 13.8 (for example) and a hi-z injector is pulling 4 amps, and a low z is pulling 8 amps when it opens, then the low z should have twice the magnetic force moving the pin to open ...

You mention software, but the delco is so old that it has a hardware fuel controller, and hardware spark controller on board. The main cpu only runs at 2mhz. It samples the inputs, calculates everything it needs to, sets the direct output (fans, tcc if auto, nitrous or water injection if your runnin...

delco/holden/gm cheapened out with the 808, no low-z, no sxr uart chip for high speed comms, lower quality (but still acceptable) pcb. Thats why the design looks like it might be possible but doesnt come up with the goods. Also note that its not voltage - its current, which is a lot harder (read mor...

I couldnt link directly to the end of the thread, but in in the last post vl400 who is the main 12p delco software developer states that he could not make the '808 do peak and hold on the bench. He said it just sucked 8 amps no matter what and never reduced the current, even when he tried to electro...

Yeah, they have the same bore and stroke as an sr20, and ive heard (and tend to believe) that makes many parts interchangeable (ive heard pistons...., and i have measured up the pulsar gtir head studs which look to fit meaning they can be purchased as an off the shelf ARP upgrade details http://gemi...

nah, i didnt ask about buckets. one other thing he said was that the cam bearings shouldnt need replacing as being twin cam there is very little load on them. I know things happen in these engines and sometimes they die, but he seemed to think that should that happen and you can get a second handie ...

yeah, but the advantage of low-z is the quicker opening time, if you add resistors/ballast you loose that, so you might as well just run high-z to begin with. The default delco calibrations normally have acceptable compensation tables in them, and even when you do an injector swap your usually fine ...

The problem is that they lack the peak and hold circuitry. Kalmaker used to make a low impedance driver (and I have one), and have used it with success but its covered in tar and I cant see how they did it. Its not really worth the hastle of hacking ways around the problem though, as for NA engines ...

Im a bit late to this thread, but I am running delcohacking.net gear on my g200w in my gemini, and recently at the bellett nationals got the same tuning running on a bellett gtr with only very minimal mods. It seemed the VE table (pressure vs air map that is used for the basis of fuelling) transferr...

I recently attended the Bellett Nationals, and made it my mission to find out what i could about these cam bearings. I ended up talking to Tom Amos about the subject, and he said without a doubt no cam bearings were interchangeable from any Florian or Bellett engine to the DOHC engines. The others t...

Ok, so my bellett encyclopedia mate recons that'd be the G161S OHV engine, common with the early chevy luv. Some places still stock chevy luv parts, and it might come up in american parts catalogs. Checking wikipedia though it says luv starts in 72 and with a g161z, and my mate is talking 60s. The g...

Very interested still poida!! so are the bearings labeled with part number 9-1161-040 (holden number i think)?? That part number doesnt come up in holdens catalog. Neither does 9-11611-040 In fact it doesnt come up anywhere on the net except this forum. I would say its an isuzu number like poida sa...

I take it your on-track builts is merely a recondition. No... :) But its where im at. The head had quite some wear and needed the work it got. Now it should be solid for years to come. I could have put hot cams in it for NA, but that would not have suited boost, or turbo cams, which would have made...

Well thanks for looking, but I dont think we should all build exactly the same package. I have a plan, know my next steps and its well on course. This is a streeter, and efi is better and its my hobby. My other gemini is the insane-o skyline GTR killer. This is my sleeper. http://gemisa.net/forums/d...

Just got my head back from the engine shop.... I got to it before it was totally stuffed, but I had poor oil flow to the front exhaust cam and so the cam was damaged, as was the bearings there, and there was far too much play in the exhaust valves and one was just starting to leak. So, replacement c...

Looks good, Elky.. (this sentance is purely to meet the min 25 char limit on posting)

Sorry for the months late reply, only saw it just now, but I suggest doing the high speed comms mod to the ecu and running ose12p from here http://delcohacking.net/forums/viewtopic.php?f=27&t=356 Then with a laptop and an FTDI brand usb->serial interface you can get all the info you need out of ...

I was referring to the same effect as this mod: http://poida.x10hosting.com/twincam/viewtopic.php?f=1&t=464 Also I just noticed that the honda bearing has the same branding as the original bearing. Can anyone pick the company? Original is stamped SD8B but its over exposed in the pic. http://gemi...

My Honda motorcycle mate says that being a main bearing in a modern bike that is producing 39 kW at 11,000 rpm and 39 Nm at 9500 rpm and with more oil flow due to the trench in it he says he'd use the Honda bearings and be confident that they would take force on the cam. But... its up for debate...

Ive found a honda motorcycle main bearing that is pretty close, but not perfect. Ive discussed it with the engine builder who is cleaning up my head and he says that the notch being in a different position is not a problem as its easy to notch the head, and the oil hole missing from where its needed...

Has anyone tried taking one out and going to a generic bearing shop and saying "can i have some of these please?" I dont know a lot about the topic, but surely such a basic metal part its an off the shelf item after matching up the physical size? Trying to source the right isuzu OEM part n...

Wow, just stumbled across this on ozgem, and followed the link here. I'd be interested in a set. Planning on cleaning up, installing an MLS and whatever else, and putting some boost in to mine.

Try this, its my home server, so wont 'dissapear' if nobody downloads the file for an extended period.

http://www.symons.net.au/manuals/G200WE ... ese%29.pdf

Finished off the re-assembly last night after getting some fresh hoses, and it lives again!

http://www.youtube.com/watch?v=54v-X4A1DsY

What sort of intake are you running on yours? There must be some reason yours got those kind of numbers. What kind of dyno was it measured on? My engine and my mates engine are both standard, one on delco one on motec, are both within 5kw of each other at the wheels. I'd be interested to see what yo...