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 Post subject: B204 /5 project
PostPosted: Sat Sep 21, 2019 9:29 pm 
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Joined: Thu May 09, 2013 5:36 pm
Posts: 78
Location: Craigavon
Car Model: 9-5 b205, 9-5b204/5, 9000 b234
Hi guys.
I need some quick advice.
On my last build, the oil pressure was too low and I striped the engine down and tried to find an internal leak.
Didn't find any. The crank was checked, polished and balanced. All conrods were balanced.
The flywheel and pressure plate were balanced. All new bearings seals, oil pump gears and housing /timing cover. The balance shafts were deleted.
Last week I checked the oil jets.
I made a wee tool to check which pressure opens the oil jets.
I found that 2 oil jets open at about 1.5 bar, 3rd about 1.0 bar and the 4th one is open all the time (no valve).
The b204 block came from a non-turbo car and all jets were blanked by bolts (no jets at all).
I spoke with another guy and he said that the 4th cylinder has no valved oil jet (open all the time).
I can't see the point of using an oil jet which is open and lose oil pressure even when pressure is low at idle.
I want to get some spare jets from another engine and get them set as close to 1.5bar. What do you think about that idea?
Will that build the oil pressure up or size the engine?
Thanks.


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 Post subject: Re: B204 /5 project
PostPosted: Wed Oct 09, 2019 7:57 am 
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Joined: Wed Sep 13, 2006 12:44 pm
Posts: 12875
Location: Bristol
Car Model: '59 2.8 XWD '55 Diesel SW
You could do with digging out the thread from the guy with the ascona, he struggled with, but as I recall fixed, oil pressure issues.

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 Post subject: Re: B204 /5 project
PostPosted: Wed Oct 09, 2019 12:52 pm 
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Joined: Fri Nov 23, 2007 6:13 pm
Posts: 20332
Location: Maidstone
Car Model: 9-5 Aero
Jules_ht wrote:
You could do with digging out the thread from the guy with the ascona, he struggled with, but as I recall fixed, oil pressure issues.


If I remember rightly, that may have been down to the size and shape of the oil pick up tube in the RWD adapted sump.

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 Post subject: Re: B204 /5 project
PostPosted: Thu Oct 10, 2019 9:07 am 
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Joined: Wed May 12, 2004 9:53 pm
Posts: 17004
Location: Devon
According to the EPC, only the B234 was fitted with the jets and they are all the same part number so should be the same. There is no special one for any particular cylinder. I suspect 1 bar or 1.5 bar is neither here nor there. They may not be made that precisely. However, if you want to match a set, then it'll give you some confidence that you haven't got one near the point of failure.

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 Post subject: Re: B204 /5 project
PostPosted: Fri Oct 11, 2019 9:58 am 
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Location: Bristol
Car Model: All
Cooling jets are ALL the same as fitted to B204/B205, B234/ B235 part number 9167677

Still available new £20 each.

Jets are fitted to all the above engines.

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 Post subject: Re: B204 /5 project
PostPosted: Fri Oct 11, 2019 4:00 pm 
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Joined: Wed Mar 02, 2011 11:34 pm
Posts: 2314
Car Model: 9000 Aero
McVities wrote:
Jules_ht wrote:
You could do with digging out the thread from the guy with the ascona, he struggled with, but as I recall fixed, oil pressure issues.


If I remember rightly, that may have been down to the size and shape of the oil pick up tube in the RWD adapted sump.


It was, oil pickup pipe was significantly longer and sitting lower in the sump.


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 Post subject: Re: B204 /5 project
PostPosted: Tue Oct 15, 2019 9:27 pm 
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Joined: Thu May 09, 2013 5:36 pm
Posts: 78
Location: Craigavon
Car Model: 9-5 b205, 9-5b204/5, 9000 b234
Hi guys.
Thanks for your help. I pulled out a jets from another spare sized engine, but there opening pressure was very low about 0.5bar.
I'll get new one and check the opening pressure.
Thanks


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