been driving my 90 turbo for a couple months now, it drives and performes very well oher than leaking a bit of water,
theres a couple of noises that im not sure are healthy, i know small turbod engines can sound a bit rough off boost,
when i fire her up from cold, theres a fairly loud knocking sound, maybe tapppets? for about twenty seconds, then it stops, however a couple of times its taken longer to dissapear, and continues knocking while i drive, ive found that the car doesnt boost properly , when its doing this. but then it warms up and goes away.
second one is a kind of rasp or scrape sound just before the car boosts, when boosting it sounds healthy and clean, but just before the turbo comes in at 3000rpm theres a sound that doesnt sound great, although could just be something vibrating.
ok, finally, the car seems to have a habt of hunting around when its idling, revs slowly pulse form about 900rpm and 1200 when im sitting at the lights...
any one who can shed any light on any of these, id be very grateful.