baffy Posted October 12, 2010 Share Posted October 12, 2010 Hey guys figured this is probably the best place to post this. Picked up an FJ package today, to myself appeared to be a regular FJ20et my room mate has had a few and thought it was factory turbo also. Now i got it home and started stripping it down to to gauge its condition better and see if it needs a rebuild. The first sign i found was the exhaust manifold studs are M8 rather than M10. The most obvious sign was the inlet manifold has 'eccs' rather then 'turbo' stamped on it, the guy i bought it off said the inlet had been changed to make it fit better in the engine bay as its apparently smaller? The oil feed for the turbo appears factory to me, not just a random hole drilled and tapped into the block. But this is my first FJ so im not sure if they use the same block NA and turbo? When i pulled the rocker cover and sump off, i found the head has recently been rebuilt and new pistons installed (standard rods) So basically, in your opinions does this sound like an NA engine with a turbo added? and is there an easy way to tell? Also has anyone heard of this being done before and the results, shortened life span etc? The engine will be going into my machinist in the next few days to be gone over thoroughly and compression ratios etc determined. Anyways thanks for reading my novel look forward to learning a few things. Cheers Baffy Link to comment https://www.sau.com.au/forums/topic/340213-fj20et/ Share on other sites More sharing options...
Ghostrider Posted October 12, 2010 Share Posted October 12, 2010 There were two (2) inlet manifolds on FJ20et, the smaller (shorter runners) was off the S12 Silvia so that it fitted into the engine bay. Maybe FJ20.com might be a good place too! Link to comment https://www.sau.com.au/forums/topic/340213-fj20et/#findComment-5493765 Share on other sites More sharing options...
tir31 Posted October 19, 2010 Share Posted October 19, 2010 (edited) bit hard to tell if the engines not original unopened as parts couldve been swaped but yes with the smaller exhaust studs i would say the head is n/a tho turbo cams couldve been swaped in? or not. the oil feed is a banjo bolt on drivers side of block near starter and oil return is a large barbed fitting in block on passanger side just under stock turbo position > on an n/a block the boss is there but blank but would be possible to fit these with drill and tap tho would be easier to T oil feed off oil sender and return to mod'd sump like z18et and L6turbo motors. i havnt pulled my n/a engine apart but been told rods r slightly smaller, oil pump is smaller and pistons are different to change comp ratio. block casting,crank and bare head suppose 2b the same. my n/a engine has the short rocker cover not the normal high 1s and yes intake manifold has different word cast init, s12 silvia has shorter runner length. hope thats some help jon. Edited October 19, 2010 by tir31 Link to comment https://www.sau.com.au/forums/topic/340213-fj20et/#findComment-5505316 Share on other sites More sharing options...
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