darkoh69

No I see relevance in this. It seems like your saying ‘oem very good, but thermos are very good also.’ & ‘In your experience falcon thermos are better’.

Should’ve had electric fans engine probably still be spinning 😜

Ok ok I’ll change it back.🤐

Theres nothing wrong with an electric fan setup if its setup right. Mine keeps it at least as cool as a stock setup. Most later model cars run em.

Factory stuff broke years ago. All I could get at the time was a 14 inch electric & a cheap Chinese thick alloy radiator which for many years after never let me down which is why I said what I said

Yeah that is an idea. & I dont wana sound like I don’t appreciate your advice but the as the old saying goes if aint broke dont fix it

Sorted!! F**king loving it! Ditched the twin fan setup for the single 14. Running perfect! Cheers robbo_rb180 because the twin fans were brand new, if you hadn’t mentioned it I wouldn’t have even spared a thought for them being the issue! I know its not the clutch fan setup every one suggests but its a win either way. So cheers to everyone for chiming in, made my year ya bloody legends!!!

None taken. I hear what your saying. I know the clutch fans are good but unfortunately the blades on my fan bowed & chewed out the radiator not long after I got the car. So Ive had a 14 inch elec on an alloy rad ever since. It was all I could scrape together at the time & didn’t let me down for quite a few years. But when the old alloy did fail the only thing Ive put on there thats different is the twins. Pressure test has held 1.1 bar for 30 minutes now, is that enough pressure to test it with? What possible causes could that remove from the list?

Plumping configuration should be ok I put the ffp on a few years ago & its been on the dyno twice since then. But when I was putting it back on after the head was back in I could have nicked the plenum to head gasket. It would be just my luck to fix a problem only to cause another problem with the same symptoms. Ive got a new aeroflow 14” fan coming today the twin 10s are really the only thing that’s different in my setup & probably the easiest job to check off the ‘possible cause’ list.

Yeah as soon as I see the gauge on the dash start moving anything above halfway which it never usually would I nurse it back down my driveway.

Only the factory gauge & the digital readout on the fan controller in the engine bay. Seen it a touch over 90 degrees C

Havnt been on an extended drive because Im sure it would keep getting hotter. Havnt pressure tested it yet but yeah I’ll have to. I was wondering about the plenum leaking coolant, could that cause the steamy tailpipe? Hopefully because Ive been trying to push the block issue to the back of my mind but the steam keeps bringing that thought right back to the front. The only thing that seems to have changed after doing the HG is the miss at startup, which I figured was from water seeping into #4 overnight & looking at the old gasket kind of confirmed it. Appreciate your input. Appreciate everyones input

Yeah could be the fans. I was running a single 14 on my previous rad before this started happening with no issues ever. Infact the alloy radiator & that single 14 was the first mod I did to the car 7 or 8 years ago

Yeah fine at idle.

Do koyo flow water around & though the whole rad or does the water fall straight down from inlet to outlet?