Bowman coler mounting

[PaulB]

Hello all,
I am fitting an original type Bowman oil cooler to 440 and would like to ask if someone can tell me how the cooler was mounted on the engine.
It is clear that one end of the cooler mounts to two of the front timing cover bolts. However it is not clear what the other end attaches to, or how.
The outer end of the cooler has a tag with a hole in it, but it not near anything substantial. My guess is that there should be a stay to the tappet cover screws or to the water transfer casting bolt, but nothing is really obvious. Any advice gratefully received.
By the way, the motor I built up (PDJavelin originally) and fitted for Targa Tasmania earlier this year is still running like a top with 75 psi oil pressure hot and with zero leaks- I can hardly believe it. Have to admit to high oil consumption. I understand others have also had problems with the plain oil rings on the Australian JP original spec pistons that I have fitted (2mm oversize).
Cheers,
Paul

[Drummond Black]

Paul, I fitted a bracket from the two tappet studs to support the outer edge of the oil cooler. Make sure the cooler is positioned so that there is clearance between the cooler and the water transfer stud. I have my cooler off the Jupiter at present or I would have sent a picture.

Re JP pistons. I am in the process of fitting a new set with solid oil control rings. I have heard that they take a while to settle in ??
What mileage has your done ?

[PaulB]

Drummond,
Thanks, that seems a logical place to stay the cooler.
Re the JP pistons, they have done about 3000 km now. At first there was quite a lot of blue smoke from the exhaust when not under load, with an apparent reduction once on the move. First day of Targa was a bit embarrasing. After one day the smoke rapidly subsided and there is none now. Unfortunately oil consumption is still high, maybe a litre in 600 km at 100 to 110 kph. I think this consumption rate is very slowly falling. The consumption is accompanied by a rapid blackening of the oil. The oil I am using is Penrite HPR 30 which is a 25/60 high performance mineral oil used a lot in club level motorsport. Apart from the high oil usage there is nothing to suggest crankcase pressurisation as there is no oil on the tappet cover vent felts or coming out of the oil filler tube when the cap is off, and cylinder compression is uniform and good.
Cheers,
Paul

[paul byrne]

All, and particularly Paul Brierley and Drummond, please accept my apologies for logging in as Paul and not Paul Byrne when I started and responded to this topic. I am out and proud as the Tasmanian PB! I guess I fluked the other Paul's password.
While I am on the site, does anyone have a photo, description, or drawing of what the dash intruments should be, and the layout of them. 440's gauges have chrome surrounds, which I know are incorrect, but I would like at least to have the right ones and to get them all working. If there is anything anyone could add to Drummond's helpful reply on the outer mounting set up of the Bowman cooler that would also be appreciated.
Regards, the Tassie PB.

[Mike Allfrey]

Dear Paul and Drummond,

Just back from India, where there is reportedly a black Jupiter somewhere.

I have picked up on the JP pistons saga, and wish to volunteer my experiences with them. Originally I fitted a set of JP pistons with segmented oil control rings. The oil consumption was, fairly high and the oil soon turned black. The consumption dropped off significantly after 25,000 miles were put on the speedometer. That engine is now in my Javelin and still uses little oil.

The rebuilt engine now in my Jupiter also has JP pistons with the difference being that the oil control rings are plain cast iron rings. This engine, from rebuild, has used very little oil - right ftom start up. We opted for single piece rings on an attempt to reduce drag.

The oil still turns black i have a leaning towards the evils of un;eaded petrol on that.

Regard

Mike Allfrey

[Forumadmin]

An acquaintance said he had converted a car to LPG and the oil always remained crystal clear where previously it had turned black rapidly. So petrol looks like the culprit.