Isuzu G-series Twin Cam

The motor is elkies ex drag gem g200w, so those intakes. I haven't seen them apart yet but i believe they are the kind you can still buy new from yahoojapan.
No worries I will have to have a hunt around the various gem sites to see what i can dig up.

back onto this torque g200w build as i have now sourced a g200w ready to go when i return from working away. So L1 cam profile as stated (will be a later thing), motor has the jap twincarb manifolds, 45 dcoe carbs will be sourced and i have my nice set of big 4-2-1 pipes. Your gurus layout essential...

http://www.newman-cams.com/pdf/lotus.pdf this link has an L1 profile that is similar, but given it says "original L1 profile" for a lotus twincam this could be close as they are a similar era motor and similar architecture. Could be way off but without getting a standard cam measured its h...

On a side note, I contacted the fella from sleeka spares and he can still get the g200w gasket kits apparently. $370 each or 2 for $350 each. Does anyone remember what was in the kits exactly? I seem to remember hearing they where a complete gasket kit including sump and the little timing case gaske...

Ok then i think ill just get the head/block faced as required. with the carbs a 48idf and 45 dcoe are similar in throat/venturi fitout so will deffinately suffice, and they have f2 emulsions which i pinched for the 40s when it was in the car. The exhaust i have is a nice set of 4-2-1 pipes which fin...

i was only going to deck the block or head to get the comp up as high as i could really, if standard g200w pistons with the g180w head will suffice then i have no need as i wont be getting custom pistons made. That 230hp though is with cams and since there isnt anyone about to make up those cams/shi...

ok im planning on rebuilding my g180w for my panno when i return home from working away. The motor is currently sitting on my shed floor but is setup with twin 40idfs, unknown dizzy and a nice big set of 4-2-1 extractors. Ran very nice once i tuned it properly (cam was out a tooth when i got hold of...

Chasing a g200w timing case with the ratchet type tensioner.
Will possibly buy entire motor pending price/location

cheers,
danny

hmm mine seems to have flat tops in it... once its out will have to do some measuring etc

does anyone know what type of factory piston this is? http://bellett.net/forums/viewtopic.php?f=13&t=84
or does anyone know of a high comp alternative that isnt custom? or what the dist from the pin to top of piston is for a g180w piston?? as i have a piston in mind that may work

was polished when i obtained the motor and i painted it black. That alternator is a mitsubishi one, great compact unit

As my new motor is starting to come together my current setup is now for sale. Engine is still in car and can be heard running test drive etc until i remove it. The motor has an oil leak and a topend rattle that cant be identified but niether affect its performance. Ive driven it back from sydney, r...

turns out its probably just an exhaust leak right under the head. found the manifold flange to be snapped between 3-4, weirdest sounding exhaust leak though as it resonates through the head.

ok im determined to find this rattle, atm my motor is quiet when cold but as it warms it develops a rattle/tap that raises with engine speed. Now ive checked cam clearances and they are to spec, compression is an even 135 psi across all four, run the motor without the belt to make sure the alternato...

to add to the bearing info, i have the other sets that poida mentioned and compared one last night. From sitting a cam bearing next to the packet etc they do look identical. pics: http://img443.imageshack.us/img443/7375/20121201190705.jpg http://img543.imageshack.us/img543/2290/20121201190723.jpg ho...

Going off this link: http://www.excite-webtl.jp/world/english/web/?wb_url=http%3A%2F%2Fwww.sabitori.com%2Fjreast%2Fdatabase%2Fspec2.html%3Fsubmit%3D%2583E%2583F%2583u%2583y%2581%255B%2583W%2596%257C%2596%25F3%26wb_co%3Dexcitejapan&wb_lp=JAEN It has stock timing for a g200w as 14 degrees, is this...

this has turned into quite the post! Setup the cams and the inlet was two teeth retarded, not sure how it ran as well as it did although the power/torque did feel peaky and odd. Now its nice and smooth and really starts to wind up around 3500rpm, although i think i need to play with the timing and c...

Nah thats just an odd reflection, cams are in perfect nic cant say that about the cam bearings though. I will deffinately be investigating in modifying or using shims from another motor when i get a chance to reco a head, just to be sure its right. Hopefully i can find something close to replace it ...

Ok got some pics to hopefully help sort this out, on inspection the inlet cam seems to be retarded a tooth or 2 maybe.... The chain has no bright links that i could see to line em up so i will have to go off what orientation the cams sit at tdc?? Sorry about the pics my camera was being a pain. Inle...

pulled down and cleaned the tensioner, all was good and made no difference.... could an adjustable bolt setup be made to suit? basically thread the brass nut and install a threaded rod/bolt to tension the chain? Also with cam timing i found this http://workshopmanual.org/twincam/viewtopic.php?f=8&am...

hmm the chain looked new and in perfect nic, as did the cams. Will pull it down and give it a clean to see what the go is.
Cheers for all the help so far.

hmm looks like i have the hydraulic type, is there anyway to adjust/modify it? as i believe this is where my loud rattle is coming from. When it starts up there is a slight tapping but after the motor and oil has really warmed up the tapping gets extremely loud, the exhaust cam bearings did show sig...

swapped them over and no change somehow...... Also do twincams have adjustable cam sprockets standard? as this on does but it has an offset little bush made up to locate the cam, making it not adjustable?? Also how do you tell which tensioner is which? searched and found out there are 2 types but ho...

that was cold settings, i swapped my turbo sohc for this twin carb dohc. So im unsure on age since rebuild, it was apparently rebuilt not long before the previous owner but he couldnt confirm this. The motor is clean inside with no obvious wear etc on the cams, buckets, chain guide. I was just going...

cheers for the oil info, just changed in hpr20w60 so will have to drop it for some gtx by the sounds of it. Diverging this post further lol Can i just swap cam buckets out in a twincam? I jsut checked the clearances on my twincam as it was a bit tappety and found the following: no1: inlet 0.18 ex 0....