-
#15
by
lovinthedeez
on 11 Oct, 2010 12:14
-
-
#16
by
madmedix
on 11 Oct, 2010 12:22
-
Those have to be the scariest looking heat shields I have ever seen. What the hell were they pressed from, recycled zippers?
-
#17
by
rs899
on 11 Oct, 2010 12:46
-
Recycled "Quotations from Chairman Mao"
To be honest, unless I really think ahead, I just reform and reuse them. The metal is malleable, and as long I get the original shape such that compression of the injector gets the nozzle hole covered, I don't see the harm.
-
#18
by
Alcaid
on 11 Oct, 2010 13:40
-
-
#19
by
sprstu
on 11 Oct, 2010 14:40
-
$125is way too expensive. I've got a set you can have for $50 shipped
-
#20
by
dankcorey22
on 11 Oct, 2010 14:53
-
-
#21
by
macka
on 11 Oct, 2010 17:36
-
I can go to my friend at the shop and get a price on OEM for you MTM. If need be we can make a swap, I want some UK parts, you can definitely get cheaper then I can.
-
#22
by
lovinthedeez
on 12 Oct, 2010 07:10
-
Is it really a good idea to recommend Prothe parts? 
injection pumps.....no
turbos......no
door handles....maybe
dollar heat shields.....yup
lots of his parts have questionable backgrounds, which I will never buy certain things. But a heat shield is a heat shield.
-
#23
by
Alcaid
on 12 Oct, 2010 07:57
-
Anyone tried those Prothe heatshields? A dollar heatshield will cost you more than a dollar if it doesn't seal against the injector...
-
#24
by
Settings
on 12 Oct, 2010 09:02
-
There's no debate in my mind.
88 cents per Meyle heat-shield locally...
Seems the OPs website has been updated to 0.76 pounds. That's more like it.
-
#25
by
vanbcguy
on 12 Oct, 2010 10:39
-
Anyone tried those Prothe heatshields? A dollar heatshield will cost you more than a dollar if it doesn't seal against the injector...
I've run them in my engine for a while with no ill effects. They seemed to seal fine. I don't have them in currently as I changed injectors, but there was no sign of heat shield leakage when I pulled the injectors.
-
#26
by
RabbitJockey
on 12 Oct, 2010 19:06
-
I like to reuse my heat shields, because I can't afford new ones, each time I check my injectors.
Let us know how long your engine run until the injector tips are fried.
Sorry but they're actually selling anal penetration without lube on that deal. Those shields cost about $1.25/ea.
i've reset a couple heat shields with no issues, and i know a guy that always resets them, and he works on a lot of diesels for himself and other people, either way for what they cost i always replace them now
-
#27
by
Mark(The Miser)UK
on 12 Oct, 2010 19:50
-
Nice to see Simon updated his site. Had I not needed to become a member to post, I would have whispered in his shell like .
I find it funny how some of you didn't catch on that is was clearly a mistake, as that was the price each.
However, this thread was spoiled by those purveyors of doom, whose whole life seems dedicated to spending money unneccessarily. I know shields are only a few $ each, but from recommendations I see elsewhere, any opportunity to throw money away is taken with zeal.
As for frying my injectors due to reuse of shields, I find in my experience that to be utter nonsense. Any shield that is 'leaking' fluids will soon dislay the fact by continual bubbling and sweating around the base of the injector. Occasional inspection will soon discover this, and if neglected... Well, you only have yourself to blame if you carbon up the threads. If you r &r injectors, any temporary leaks should dissappear after a few days, if they don't, then r & r them again.
I suspect that many stuck injectors have virgin shields beneath them.I have just adjusted my injectors. They came out easily. Here is a pic of the dryness.
These injectors had been in for about 20000 miles and the shields have been in for about 30000, and date back to the previous Quantum the engine was in. They have been reformed:1) 10000 miles into my ownership of the prev car, as I had a headgasket blow, and I skimmed the head by hand.
2) I had a spare set of injectors from a scrapped Quantum and swapped them in to see if they were any better.
3)I got my first pop tester, and wanted to check it's operation. So I pop tested my 'then' collection of 8 injectors and put in the 4 nearest to 155bar.
4) Physics and H Ricardo convinced me that 130 bar injectors should give better economy than the TD rated ones, so I installed these current Bosch ones from some kind of Ford. They have made in France on them and the nozzles are SN0 315's also French.
5) As part of my recent dramatic re-ring of this indestructible mech headed engine, I have now aligned the pressures from 125, 125, 125 and 130 so that they are all 145bar, as near as I can get them with my homemade spring steel shims.So that is at least 5 documented reuses, (There may have been a couple of others when I tried to find the knocking noise, that plagued this engine)
The August rebuild revealed the over zealous skim had allowed the exhaust valves in #1 and #4 to harmlessly dig a nest into the piston crowns I have a few rules when reusing the shields:I use the best IMO technique to reform them. Some hit them and some use a drill press, but I use locking grips, that I can select the amount of reforming, and make it repeatable and precise:
About 15 thou clearance on nozzle is sufficient:
Please excuse my dirty thumbnail, I don't bite them [I use it as a gouge/screwdriver though]
I usually set my injectors back in the head with about 30 lb ft. I find that is sufficient if the shield is working correctly. More is damaging IMO to the aluminium ledge in the head...
I keep the shield in the same hole. Prothe's gold shields show the ridges in the under part of the shield . These are often uniquely placed and actually dig a furrow into the head. Many diferent shields will dig different trenches and wear away the flesh [IMO]
-------------------------------------------
Finally for all those clever sceptics out there, here is a little puzzle. Below is a picture of 8 shields. 4 are my ones from above and 4 are presumably single use. The crud on some is where I dropped them into the dirt. They are in no particular order, other than darker ones at the bottom.
So which are the ones that should be frying my injectors?
-
#28
by
RadoTD
on 12 Oct, 2010 21:04
-
I find it funny how some of you didn't catch on that is was clearly a mistake, as that was the price each.
Dare you suggest that something on the intrtowebs is incorrect? He surely must have just recently found a cheaper supplier because nothing on the internet is ever wrong...
-
#29
by
rs899
on 13 Oct, 2010 03:53
-
Mark-
Thanks for sharing your technique. That looks far better than what I have been doing- giving them a whack with a hammer on a round-headed screw clamped in a vise. I have 11 cars so I have better things to waste money on than injector seals ( like tires, batteries, insurance).
Rick
