Wise words, it sounds harsh but with flat tappet cams it has to be done for the long term Health of the engine.cannonball wrote:Junk that old 4 barrel n stick a sixpack on it
hey make sure you get a couple of bottles of zinc additive, make sure all your levels are good to go fire it up keep the revs around 2,500 and occasionally blip it up down for circa 20-30 mins, if its running a dual valve spring break it in on only the outer, some of these new cams can fck real easy matey
My Early Mk3 Interceptor Restoration project
- Trevithick
- Posts: 1963
- Joined: Thu Jun 09, 2011 6:47 pm
- Location: Wild West Cornwall
- Contact:
Re: My Early Mk3 Interceptor Restoration project
SP 131/4980.
Back soon.
Back soon.
Re: My Early Mk3 Interceptor Restoration project
It's very addictive Dave (DPP)DPP wrote:This all looks like concours preperation to me
Keep nipping down to the garage and bringing bits home with me - see below
John P
- Attachments
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- Linkage / Expansion before
- Photo 22-01-2017, 15 53 53.jpg (151.38 KiB) Viewed 5290 times
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- Linkage / Expansion after
- Photo 22-01-2017, 15 54 03.jpg (165.4 KiB) Viewed 5290 times
Previous Jensen Owner 2010-2022 (128/4451)
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
Re: My Early Mk3 Interceptor Restoration project
Hope your using the dishwasher for the initial cleanPymmie wrote:It's very addictive Dave (DPP)DPP wrote:This all looks like concours preperation to me
Keep nipping down to the garage and bringing bits home with me - see below
John P
Let me know if your entering the JOC Concours at the international, and what class. I can then enter into a different one to give myself a chance
Eddie
JOC 10030
Interceptor II 123/3901 CEA 1J
1970 Earls Court Motorshow Car
JOC 10030
Interceptor II 123/3901 CEA 1J
1970 Earls Court Motorshow Car
- VFK44
- Co-Administrator
- Posts: 9239
- Joined: Wed Jan 10, 2007 10:04 pm
- Location: Epping Essex UK
- Contact:
Re: My Early Mk3 Interceptor Restoration project
Don't. Just don't. And don't ask me how I know.Hope your using the dishwasher for the initial clean
"Now that chassis number is particularly interesting ‘cos it’s the one after the one before, which is the one after mine, not many people know that"
Stephen, Epping, Essex
Stephen, Epping, Essex
Re: My Early Mk3 Interceptor Restoration project
I set about tackling the valves this week.
My guess is like the heads they haven't been touched for 45 years.
It really only took 5 minutes per valve to clean off the oil/carbon deposits using
a drill to mount the valve and rub off with glasspaper.
Heads have been skimmed ready to put back together..
John P
My guess is like the heads they haven't been touched for 45 years.
It really only took 5 minutes per valve to clean off the oil/carbon deposits using
a drill to mount the valve and rub off with glasspaper.
Heads have been skimmed ready to put back together..
John P
- Attachments
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- Photo 24-01-2017, 14 25 32.jpg (164.5 KiB) Viewed 5217 times
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- Photo 24-01-2017, 14 25 19.jpg (183.25 KiB) Viewed 5217 times
Previous Jensen Owner 2010-2022 (128/4451)
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
Re: My Early Mk3 Interceptor Restoration project
While the car is having work done i asked the mechanic to replace the engine mounts.
Really glad we addressed this.
The passenger mount was split into two (See picture 1)
Driver's side replaced but not too bad
Another small improvement
Johh P
Really glad we addressed this.
The passenger mount was split into two (See picture 1)
Driver's side replaced but not too bad
Another small improvement
Johh P
- Attachments
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- Passenger side mount (split into two)
- Photo 14-02-2017, 12 27 56.jpg (163.25 KiB) Viewed 5114 times
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- Drivers side mount
- Photo 14-02-2017, 18 29 09.jpg (130.45 KiB) Viewed 5114 times
Previous Jensen Owner 2010-2022 (128/4451)
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
Re: My Early Mk3 Interceptor Restoration project
Today's task was a messy one.
As two of the bolts from the sump attach to the timing cover my mechanic removed the sump. I'm sure it hasn't been off for 45 years.
Around 40% of the oil pick up was blocked with nylon gears/rocker gasket material.
The bottom of the sump had a 25mm layer of black treacle that took some scrubbing after 2 days in a parts washer to remove.
Everything is now clean & shiny ready for refitting.
Also sprayed & polished the rocker covers.. I'm enjoying making small improvements week on week
John P
As two of the bolts from the sump attach to the timing cover my mechanic removed the sump. I'm sure it hasn't been off for 45 years.
Around 40% of the oil pick up was blocked with nylon gears/rocker gasket material.
The bottom of the sump had a 25mm layer of black treacle that took some scrubbing after 2 days in a parts washer to remove.
Everything is now clean & shiny ready for refitting.
Also sprayed & polished the rocker covers.. I'm enjoying making small improvements week on week
John P
- Attachments
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- Photo 03-03-2017, 13 17 01.jpg (118.54 KiB) Viewed 5017 times
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- Photo 03-03-2017, 13 17 30.jpg (116.33 KiB) Viewed 5017 times
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- Photo 24-02-2017, 15 51 06.jpg (94.34 KiB) Viewed 5017 times
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- Photo 25-02-2017, 12 30 09.jpg (217.75 KiB) Viewed 5017 times
Previous Jensen Owner 2010-2022 (128/4451)
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
Re: My Early Mk3 Interceptor Restoration project
Good progress today...
Heads are back on. Manifold & Carb on.
Water pump / AC / PAS / Pulleys & Rads refitted.
New hoses & jubilees to everything...
Turned the oil pump with a drill to check oil getting
to everywhere.
Getting closer to start up
Heads are back on. Manifold & Carb on.
Water pump / AC / PAS / Pulleys & Rads refitted.
New hoses & jubilees to everything...
Turned the oil pump with a drill to check oil getting
to everywhere.
Getting closer to start up
- Attachments
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- IMG_3649.JPG (142.63 KiB) Viewed 4914 times
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- IMG_3646.JPG (161.39 KiB) Viewed 4914 times
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- IMG_3644.JPG (169.61 KiB) Viewed 4914 times
Previous Jensen Owner 2010-2022 (128/4451)
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
Re: My Early Mk3 Interceptor Restoration project
On Friday the car was finally put back together.
Fluids added and checked & every nut @ bolt nipped.
Car was fired up around lunchtime and started quickly.
We had no hesitation in running the cam in for a full 20 mins. Fans were bridged to work from the start.
My mechanic (Dave Bradburn) couldn't believe how hot the headers got, until I explained it was normal.
Later that day I took the car for a decent run and everything worked well. Lots more low down power / torque.
John P
Fluids added and checked & every nut @ bolt nipped.
Car was fired up around lunchtime and started quickly.
We had no hesitation in running the cam in for a full 20 mins. Fans were bridged to work from the start.
My mechanic (Dave Bradburn) couldn't believe how hot the headers got, until I explained it was normal.
Later that day I took the car for a decent run and everything worked well. Lots more low down power / torque.
John P
- Attachments
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- IMG_3692.JPG (114.91 KiB) Viewed 4823 times
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- IMG_3691.JPG (124.1 KiB) Viewed 4823 times
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- IMG_3685.JPG (128.97 KiB) Viewed 4823 times
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- IMG_3684.JPG (157.38 KiB) Viewed 4823 times
Last edited by Pymmie on Sun Mar 19, 2017 8:08 pm, edited 1 time in total.
Previous Jensen Owner 2010-2022 (128/4451)
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
Re: My Early Mk3 Interceptor Restoration project
As usual the day after fixing my Jensen involves a road trip!
First thing Saturday headed to North Cornwall to meet up with Dave Pearce & Paul Toothill. Dave currently has Paul's SP in his
fantastic workshop/man cave. Great to see a car being brought back to life properly. We then headed to North Devon to spend the weekend with great friends & Healey owners Chris & Rose Roberts who are helping us organise the JOC Tour in Oct.
The routes are now sorted, with lots to see and do over the weekend.
John P
First thing Saturday headed to North Cornwall to meet up with Dave Pearce & Paul Toothill. Dave currently has Paul's SP in his
fantastic workshop/man cave. Great to see a car being brought back to life properly. We then headed to North Devon to spend the weekend with great friends & Healey owners Chris & Rose Roberts who are helping us organise the JOC Tour in Oct.
The routes are now sorted, with lots to see and do over the weekend.
John P
- Attachments
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- IMG_3704.JPG (73.93 KiB) Viewed 4833 times
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- IMG_3706.JPG (143.02 KiB) Viewed 4833 times
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- IMG_3707.JPG (117.04 KiB) Viewed 4833 times
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- IMG_3708.JPG (215.34 KiB) Viewed 4833 times
Previous Jensen Owner 2010-2022 (128/4451)
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
Re: My Early Mk3 Interceptor Restoration project
John, well done on the engine refurb, looking good.
Not sure how normal it is to have cherry red headers though, I posted my concerns a while back and got some helpful suggestions to reduce the temperature. One was to check the timing, turned out to be way off and causing the red hot headers. Mine looked like yours, left running in the garage it actually melted the soldered starter solenoid connections!
I don't know what exhaust you have but after the engine upgrades, a standard bore might be a bit restrictive.
The other thing you should do is fit heat proof sleeves to your plug connectors, that heat will kill your HT leads and boots.
Mark
Not sure how normal it is to have cherry red headers though, I posted my concerns a while back and got some helpful suggestions to reduce the temperature. One was to check the timing, turned out to be way off and causing the red hot headers. Mine looked like yours, left running in the garage it actually melted the soldered starter solenoid connections!
I don't know what exhaust you have but after the engine upgrades, a standard bore might be a bit restrictive.
The other thing you should do is fit heat proof sleeves to your plug connectors, that heat will kill your HT leads and boots.
Mark
I can't see the bottom of the hole I've dug!
1973 Interceptor MK 111
136-8513
1973 Interceptor MK 111
136-8513
Re: My Early Mk3 Interceptor Restoration project
Hi Mark,
Thanks for the tips. The timing seems OK at about 7deg TDC.
The HT leads are from Summit Racing and are have ceramic caps. I did 2500 milkes with
them last year and they look like new. We tweaked the mixture after the initial cam break in
and i think the headers have settled down.
Regards
John P
Thanks for the tips. The timing seems OK at about 7deg TDC.
The HT leads are from Summit Racing and are have ceramic caps. I did 2500 milkes with
them last year and they look like new. We tweaked the mixture after the initial cam break in
and i think the headers have settled down.
Regards
John P
Previous Jensen Owner 2010-2022 (128/4451)
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
Re: My Early Mk3 Interceptor Restoration project
Took the car to Rawspeed Engine tuning in Plymouth this morning.
Turned back the mixture and really that was about it. Timing and advance were
set about right and managed 205bhp at the wheels. I guess this about right for a
low compression G series 383 from 1972.
The charts shows a slight dip when the secondaries kick in...
Weird seeing the speedo read over100mph and the car static..
John P
Turned back the mixture and really that was about it. Timing and advance were
set about right and managed 205bhp at the wheels. I guess this about right for a
low compression G series 383 from 1972.
The charts shows a slight dip when the secondaries kick in...
Weird seeing the speedo read over100mph and the car static..
John P
- Attachments
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- Dyno run 1
- IMG_3895.JPG (89.24 KiB) Viewed 4534 times
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- Dyno run 2 + Torque
- IMG_3894.JPG (94.18 KiB) Viewed 4534 times
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- Engine View
- IMG_3887.JPG (107.81 KiB) Viewed 4534 times
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- Side View
- IMG_3885.JPG (187.37 KiB) Viewed 4534 times
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- Rear View
- IMG_3886.JPG (204.75 KiB) Viewed 4534 times
Previous Jensen Owner 2010-2022 (128/4451)
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
Understeer - Hitting the fence with the front of the car
Oversteer - Hitting the fence with the rear of the car
Horsepower -How fast you hit the fence
Torque - How far you take the fence with you
-
- now normal...
- Posts: 4627
- Joined: Tue Jan 10, 2006 11:54 am
- Location: Spalding Lincolnshire
- Contact:
Re: My Early Mk3 Interceptor Restoration project
Once you start John, the hard part is knowing when to stop, as there is always going to be something you could have done better..Pymmie wrote:
Keep nipping down to the garage and bringing bits home with me - see below
John P
Only working half a day now.
http://www.jensensontour.co.uk
http://www.jensensontour.co.uk
Re: My Early Mk3 Interceptor Restoration project
Timing should be 10 - 12 Degreee BTDC at idle with vacuum disconnected and going up to 34-38 at 2800 rpm.
7 degree seem too early, and cherry red headers are not normal - looks like to much pre-ignition to me.
7 degree seem too early, and cherry red headers are not normal - looks like to much pre-ignition to me.
I own some of the odd Jensen