850 tdi upgrade project - Page 5

thetroublemaker · Feb 17th, 2015, 20:08

sir. next time i pass i WILL be popping in for a cuppa and to have a looksy!!!!

martin_r_smith · Feb 17th, 2015, 20:29

Quote:

Originally Posted by thetroublemaker

sir. next time i pass i WILL be popping in for a cuppa and to have a looksy!!!!

No problem buddy anytime.

What did you do with yours in the end?

martin_r_smith · Mar 6th, 2015, 18:11

Right new head bolts in, try her out up the road, come back for a check and the expansion tank is full to the brim. Calling fan on (first time I've seen it on) and monumental pressure in the coolant pipe, but the bottom hose is still stone cold?? So out comes the brand new thermostat in a pan of water, low and behold 100 degrees and still not opening. Just goes to show even new stuff can be defunct . Fitted another new one but tried it first! All is good again!

Had a cheeky blast on the dyno and got 237bhp 364ft/lb. Pretty happy but still needs some tweaking, not so much for power but to tone down the delivery a little!

martin_r_smith · Mar 6th, 2015, 19:37

Got a bit tarty under the bonnet too

B00TS · Mar 6th, 2015, 20:30

Ooh, nice paint! Very tasteful. They do look nice without the tea-cosy on. That darned oil separator gadget upsets my sensibilities though. Surely it must be possible to mount that in line further back?

Oh, and could you remind me where you said you got the strut brace from - memory like a sieve...

martin_r_smith · Mar 7th, 2015, 08:19

Strut brace from rufe again, £65 delivered in believe

brickman · Mar 9th, 2015, 11:19

Thermostat on these is not in an ideal location either. Took me 3 attempts to get the housing to sit flush, leaked about 50ml of coolant a week until finally got it to sit right.

What did you do to fit the strut brace (later c70 job?), just bend the fuel filter bracket or did you shim the brace up and over it?

martin_r_smith · Mar 9th, 2015, 12:05

Normal 850 brace, Just welded a washer onto the filter bracket to rotate it back enough to clear the brace. Very simple really. Someone once told me I'd have to squeeze it in various places to get it to fit?? No squeezing required on mine.

No the thermostat is not ideal but it works well on this engine as they don't really ever get that hot.

martin_r_smith · Mar 13th, 2015, 20:52

All is not well

It would seem my head lifting incident has damaged the head gasket too much and it is now buggered lol, So head off time! I'm going to take advantage of the crappy situation and do some more modification. I have a fully reconditioned head on the way, new valves, seats, guides, re-face, springs, pressure tested etc etc.

Once I get it I'm sending it to Gardias Engine Services in Witney to start opening it up a bit. Hopefully with a bit of work on the head and a thicker gasket (maybe 2) I will be able to push the boost up a bit more, add more fuel, and get some more power.

I'm getting a little frustrated by all the things going wrong at the moment but modifying cars is never easy (or cheap) as we all know. But it will all turn out well in the en, I hope!

doingitsideways · Mar 14th, 2015, 00:26

2 head gaskets would last about 15 seconds at full boost!

If I were you, I'd Google Ferriday Engineering.
They used to make copper head gaskets to any thickness you like if you give them a standard gasket as a template. Even as thick as decompression plates for N/A-turbo conversions.
The Ford boys use them quite a lot, and they put some boost through Cosworth YBs!

Presuming they're still going anyway.

Feb 17th, 2015, 20:08	#41
thetroublemaker Senior Member Last Online: Feb 20th, 2019 18:16 Join Date: Apr 2006 Location: mk	sir. next time i pass i WILL be popping in for a cuppa and to have a looksy!!!! __________________ 1999 C70 T5 GT ME7

Mar 6th, 2015, 18:11	#43
martin_r_smith Premier Member Last Online: May 10th, 2022 21:01 Join Date: May 2009 Location: Wiltshire	Right new head bolts in, try her out up the road, come back for a check and the expansion tank is full to the brim. Calling fan on (first time I've seen it on) and monumental pressure in the coolant pipe, but the bottom hose is still stone cold?? So out comes the brand new thermostat in a pan of water, low and behold 100 degrees and still not opening. Just goes to show even new stuff can be defunct . Fitted another new one but tried it first! All is good again! Had a cheeky blast on the dyno and got 237bhp 364ft/lb. Pretty happy but still needs some tweaking, not so much for power but to tone down the delivery a little! __________________ 1983 244

Mar 6th, 2015, 19:37	#44
martin_r_smith Premier Member Last Online: May 10th, 2022 21:01 Join Date: May 2009 Location: Wiltshire	Got a bit tarty under the bonnet too __________________ 1983 244

Mar 6th, 2015, 20:30	#45
B00TS Senior Member Last Online: Aug 30th, 2021 08:18 Join Date: Jan 2010 Location: Stroud	Ooh, nice paint! Very tasteful. They do look nice without the tea-cosy on. That darned oil separator gadget upsets my sensibilities though. Surely it must be possible to mount that in line further back? Oh, and could you remind me where you said you got the strut brace from - memory like a sieve... __________________ 2007 V70 D5 SPORT 150k 1997 V70 2.5TDI 290k - Sent on to pastures new! Last edited by B00TS; Mar 6th, 2015 at 20:34.

Mar 7th, 2015, 08:19	#46
martin_r_smith Premier Member Last Online: May 10th, 2022 21:01 Join Date: May 2009 Location: Wiltshire	Strut brace from rufe again, £65 delivered in believe __________________ 1983 244

Mar 9th, 2015, 11:19	#47
brickman Premier Member Last Online: Nov 14th, 2023 10:40 Join Date: Jul 2013 Location: Glasgow	Thermostat on these is not in an ideal location either. Took me 3 attempts to get the housing to sit flush, leaked about 50ml of coolant a week until finally got it to sit right. What did you do to fit the strut brace (later c70 job?), just bend the fuel filter bracket or did you shim the brace up and over it? __________________

Mar 9th, 2015, 12:05	#48
martin_r_smith Premier Member Last Online: May 10th, 2022 21:01 Join Date: May 2009 Location: Wiltshire	Normal 850 brace, Just welded a washer onto the filter bracket to rotate it back enough to clear the brace. Very simple really. Someone once told me I'd have to squeeze it in various places to get it to fit?? No squeezing required on mine. No the thermostat is not ideal but it works well on this engine as they don't really ever get that hot. __________________ 1983 244

Mar 13th, 2015, 20:52	#49
martin_r_smith Premier Member Last Online: May 10th, 2022 21:01 Join Date: May 2009 Location: Wiltshire	All is not well It would seem my head lifting incident has damaged the head gasket too much and it is now buggered lol, So head off time! I'm going to take advantage of the crappy situation and do some more modification. I have a fully reconditioned head on the way, new valves, seats, guides, re-face, springs, pressure tested etc etc. Once I get it I'm sending it to Gardias Engine Services in Witney to start opening it up a bit. Hopefully with a bit of work on the head and a thicker gasket (maybe 2) I will be able to push the boost up a bit more, add more fuel, and get some more power. I'm getting a little frustrated by all the things going wrong at the moment but modifying cars is never easy (or cheap) as we all know. But it will all turn out well in the en, I hope! __________________ 1983 244

Mar 14th, 2015, 00:26	#50
doingitsideways The Daddy Last Online: Feb 29th, 2024 15:07 Join Date: May 2010 Location: Manchester	2 head gaskets would last about 15 seconds at full boost! If I were you, I'd Google Ferriday Engineering. They used to make copper head gaskets to any thickness you like if you give them a standard gasket as a template. Even as thick as decompression plates for N/A-turbo conversions. The Ford boys use them quite a lot, and they put some boost through Cosworth YBs! Presuming they're still going anyway. __________________ XC90 V8 Exec, C70 2.4T Convertible, S70 T5 CD, 850 TDI, 2 x Escort vans and a 2.8i Capri. Clearout has begun, but must continue! Last edited by doingitsideways; Mar 14th, 2015 at 00:41.

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