I would remove the throttle body to clean it - then you can be sure no crud will enter the engine.

I'd also remove those green fins you have attached to the intercooler, they probably are not helping airflow through the core.

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GT4DC Events Co-ordinator
1996 ST205 UK

now the heat shield off I have a few worries i think it looks in ok condition


should this square hole be there?



the top thing looks like a scratch the hole bottom right is that a bolt hole?


near the end for now, is this white powder normal?



thank you guys. im gonna go back and continue cleaning the underneath while i wait

edit: ill leave seraphines picture in there lol.

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THIS IS MY 4. THERE ARE MANY OTHERS LIKE THIS ONE, BUT THIS IS MINE.
red st185, running 10 psi all gears, powerflow cat back, and air filter. oh and fab scoop splitters

ok will do.

whenever i have been driving to check and stopped to touch the intercooler it has been cold to the touch with my magic/lame fins. i did feel these were helping but i shall remove them it isnt the first time its been suggested.

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THIS IS MY 4. THERE ARE MANY OTHERS LIKE THIS ONE, BUT THIS IS MINE.
red st185, running 10 psi all gears, powerflow cat back, and air filter. oh and fab scoop splitters

Maybe get a cheap temperature probe and readout to see if they are making a difference.

I'd would have thought they would be move restrictive, I may well be wrong though. See what its like running with out them, if its worse you can always put them back

_________________
GT4DC Events Co-ordinator
1996 ST205 UK

lol ok will do. im a calibration manager so have bags of temp measurement stuff. and at least ill know how accurate it is lol.

thanks sirius

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THIS IS MY 4. THERE ARE MANY OTHERS LIKE THIS ONE, BUT THIS IS MINE.
red st185, running 10 psi all gears, powerflow cat back, and air filter. oh and fab scoop splitters

Also - pretty sure that square hole should be there and the hold looks like where one of the turbo mounting studs would be so that will be fine as well.

Not sure on the white stuff.

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GT4DC Events Co-ordinator
1996 ST205 UK

One cleaned throttle body


But it couldn't have been that easy could it.....



Any tips on not rounding the heads please?

Thanks Sirius.. thought it would be bad.

_________________
THIS IS MY 4. THERE ARE MANY OTHERS LIKE THIS ONE, BUT THIS IS MINE.
red st185, running 10 psi all gears, powerflow cat back, and air filter. oh and fab scoop splitters

The 'square hole' is part of the manifold and should be there. I presume it's actually an expansion gap in the mounting flange part of the manifold to reduce warpage with heat.

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If at first you don't suck seed, try drier grain.

I wouldn't undo those screws - just leave them as it is.

_________________
GT4DC Events Co-ordinator
1996 ST205 UK

i managed to get the screws undone by giving them a little whack and some wd40, i have remoed it as i have a re[placement one fitted.



my now cleaned properly throttle body


and my engine bay as i left it


tomorrows plans are to drain the engine coolant.

i am dilemma-ing regarding removing the head, maybe i should just replace the bits i have and see if that fixes the running issues then save for martin to do it.
or.....
should i have a go whilst i have the limited time and space then its all done once and for good.

both videos i took of yesterday and this morning showed no blue smoke or unusual white smoke for that matter.

any thoughts or suggestions please ?
thanks....

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THIS IS MY 4. THERE ARE MANY OTHERS LIKE THIS ONE, BUT THIS IS MINE.
red st185, running 10 psi all gears, powerflow cat back, and air filter. oh and fab scoop splitters

Don't forget to calibrate that TPS when you have the car running again. I think the procedure is in the toyota BGB.

Did you do the coolant leakdown test for exhaust gas? That mayo in the oil filler cap dosen't look that bad to me.

As sirius says the green fins will deffo be restricting flow through the core, the scoop bonnet should have rubber seals around the outer edge were it sits over the core to force the air through so with them fins there they can only get in the way

The white discolouration is likely to be a hairline crack in the manifold and the gasket cracking on the 2nd picture, I know it should be black but ive seen this before and thats usually the cause

How come ur taking the head off still have you confirmed that the head gasket has failed ?

Martin

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We now have a new website

https://www.mkautorepairsandtuning.uk/

http://www.facebook.com/pages/Mk-Auto-R ... 7894641634

Good morning guys.

I wanted to give an update and didn't see Martin and Sirius had posted.

New plugs, new dizzy cap and arm, new Tps sensor, cleaned throttle , new calipers and discs,

I have no blue smoke, white smoke at all
The beast sounds like it is running nice. I didn't calibrate the TPS, I tried to make sure it went on exactly the same but I haven't calibrated it. I will check this weekend.

Timing is spot on.

I now know how to change brake pads,discs and calipers. I know how to do a compression check. The engine bay reduces in perceptual size once more. Woohoo.

I am going to try changing my fuel filter this weekend.

I didn't continue with the head removal, it's payday this week so I'm gonna do more purchasing and work. It needs an MOT so I'm going to book for Friday and ask them if they could do the HG test for me.

Alex Morton has an aladins garage of stuff so will be going to get some stuff from him this weekend. I think I might book my mot with his garage and ask him to check HG.

Lastly for now. I'm going to remove the fins.

Thanks.

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THIS IS MY 4. THERE ARE MANY OTHERS LIKE THIS ONE, BUT THIS IS MINE.
red st185, running 10 psi all gears, powerflow cat back, and air filter. oh and fab scoop splitters