Sleepers 1275 Sleeper

Common upgrades - A-Series mods, brakes,wheels, handling, interior.
User avatar
kingsley
.
England
Posts: 6
Joined: 3 months ago

Re: Sleepers 1275 Sleeper

Post by kingsley »

I take your points and still find the idea of projecting sensors odd :(
If I was a designer I would be designing sensors and sensor housings that fitted flush with the inner surface and were streamlined to minimise any restriction in flow.
I can't see why they have to be projecting into the flow to measure accurately, as the gas is under pressure and will be pushing against the sides of the exhaust pipe.
Maybe I am overthinking it.
Interesting though :D
Alan



User avatar
Sleeper
.
MMO Button
Posts: 487
Joined: 4 years ago
Location: Manchester U.K.

Re: Sleepers 1275 Sleeper

Post by Sleeper »

Alan
Interesting thought , maybe later on..

and as for
" A lot of diesels now have two as they check before and after the Diesel Particulate Filter so they can tell when its not doing anything useful. "

I believe that most petrol engines now have them before and after the catalytic convertor for a similar reason.

John ;-)



User avatar
philthehill
.
Posts: 77
Joined: 4 years ago

Re: Sleepers 1275 Sleeper

Post by philthehill »

To answer your question re the brass plugs in the cylinder head.
The brass plus without the holes are there to block the holes which were required to enable the removal of the casting sand.
The two brass plugs with the holes had the same purpose in that the holes they blocked enabled casting sand to be removed and additionally the holes in the plugs allowed controlled circulation of coolant between block and head.



User avatar
Sleeper
.
MMO Button
Posts: 487
Joined: 4 years ago
Location: Manchester U.K.

Re: Sleepers 1275 Sleeper

Post by Sleeper »

One learns something new every day...

Thank you.

John ;-)



User avatar
Sleeper
.
MMO Button
Posts: 487
Joined: 4 years ago
Location: Manchester U.K.

Re: Sleepers 1275 Sleeper

Post by Sleeper »

Engine Breathing

Have read a few posts etc and have come up with this...
DSC04427.JPG
DSC04427.JPG (462.52 KiB) Viewed 116 times
DSC04427.JPG
EXIF-Data show/hide
Original image recording time:
2021:04:25 16:26:08
Image taken on:
Sun Apr 25, 2021 3:26 pm
Focus length:
5 mm
Shutter speed:
1/20 Sec
F-number:
f/3.3
ISO speed rating:
400
Whitebalance:
Auto
Flash:
Flash did not fire, compulsory flash mode
Camera-manufacturer:
SONY
Camera-model:
DSC-W170
Exposure program:
Normal program
Exposure bias:
0 EV
Metering mode:
Pattern
Rocker box and crankcase teed and fed into air side of carb...

Any comments welcome.
Thanks
John



User avatar
Custard
.
Ireland
Posts: 2776
Joined: 9 years ago
Location: Blackpool

Contribution Stars

Re: Sleepers 1275 Sleeper

Post by Custard »

That seems a neat solution and avoids all the hassle regarding fan breather clearance when its on the timing chain cover.

I presume the air filter when fitted doesn't obscure the hole and that the hole is inside the air filter.

Hard to tell from the picture, but have you enough clearance on the exhaust, and also on the black tube through the full range of throttle and choke movement.

Sean.



User avatar
Sleeper
.
MMO Button
Posts: 487
Joined: 4 years ago
Location: Manchester U.K.

Re: Sleepers 1275 Sleeper

Post by Sleeper »

Sean
You presume correctly , and managed to find a piece of rubber with a nice elbow in it, fits snugly upto the carb without being in the way of the throtle/choke levers , the pipe is about 1 inch away from the exhaust so will wait and see..

They're only placed in the Tee at the moment till final assembly when I'll resin them in...

John ;-)



User avatar
Sleeper
.
MMO Button
Posts: 487
Joined: 4 years ago
Location: Manchester U.K.

Re: Sleepers 1275 Sleeper

Post by Sleeper »

Time to sort out the clutch.....
and if you're using a concentric hydraulic slave cylinder like this
concentric6.JPG
concentric6.JPG (194.13 KiB) Viewed 63 times
concentric6.JPG
EXIF-Data show/hide
Original image recording time:
2021:05:03 12:25:26
Image taken on:
Mon May 03, 2021 11:25 am
along with a clutch pressure plate like this
concentric1.JPG
concentric1.JPG (242.49 KiB) Viewed 63 times
concentric1.JPG
EXIF-Data show/hide
Original image recording time:
2021:05:03 12:26:59
Image taken on:
Mon May 03, 2021 11:26 am
You will find the nose is too wide to fit through the platen ( which is as hard as Bu**ery )
concentric3.JPG
concentric3.JPG (211.72 KiB) Viewed 63 times
concentric3.JPG
EXIF-Data show/hide
Original image recording time:
2021:05:03 12:26:07
Image taken on:
Mon May 03, 2021 11:26 am

so with a lot of effort and a tungsten carbide burr , was made to fit.
concentric5.JPG
concentric5.JPG (213.29 KiB) Viewed 63 times
concentric5.JPG
EXIF-Data show/hide
Original image recording time:
2021:05:03 12:25:45
Image taken on:
Mon May 03, 2021 11:25 am
Onwards and upwards..


John ;-)



Post Reply