Swifty
New Member
- Joined
- Apr 21, 2015
- Messages
- 8
- Country Flag
well, where do i start. about 4 months ago i blew my engine up. unintentionally of course, however that opened up the door to fitting a genuine Toyota CT-26 turbo off the 1HD-T engine. i was originally going to just fit a new cylinder head and be done with it because the 6 pre comp chambers had cracks in them. however i re-considered my options and decided to do everything, pump included. the vehicle has only done 280,000kms. i asked an engine re-conditioner to fit all 1HD-T internals into my 1HZ with my original cylinder head and 6x new pre comp chambers, as to allow for the extra load from the turbo. well what a can of worms. cylinder bores were also machined .6mm if my memory serves me well due to scoring. that all being done the engine was re-fitted in (by a qualified mechanic) went to start and it would not start. apon further investigation we found that the engine had little compression. well below specs. after checking timing and other things the issues was identified as the pistons. the 1HD-T pistons being a direct injected engine have pre comp chambers in the pistons and my engine having pre comp chambers in the head....well no more needs to be said. that problem was rectified. loads of compression now. still wont start. double checked timing crank to pump and pump to cam. all good. fuel getting to injectors not a lot of smoke out the exhaust. pulled the injector pump off to double check parts fitted and operation. all were working fine. even bench tested the pump. everything is working as it should. all timing marks line up. the only way the engine will run and when i say run i mean rough, very rough, is when the pump timing is retarded to the max which suggests that the pump to cam timing is out. triple checked all timing. tried moving the timing belt 1 tooth either way just to eliminate it. wound engine over with ratchet. valve makes contact with piston. im tossing up with the idea that the 1HZ and 1HD-T camshafts are different maybe? two engine re-conditioners in town are absolute stumped. fuel compression and air we have plenty of each yet it will will not start. things just dont go wrong with this engine.