Okay, Now I'm Completely Convinced: ALL Original HG's Are Actively Failing!

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As an update...

Hi fellas, as an update wanted to write that I have had the time to run the rig super super gently for almost four hundred miles and I am now starting to push the thing more and more. In summary, I could not and should not be happier; the rig is faster and smoother than ever.

To recap, along with the HG, the rig now has new thermostat, clutch, cap and all the extra orings that are not actually part of the valve grind kit for the cooling system couplers etc. It also has relatively new (8K) plug wires, new turbo specd plugs, new distributor cap, new distributor rotor. It has new belts, new hoses everywhere - everything from heater core hoses to rad hoses to all the bypass hoses to all the vacuum line hoses are all replaced. It has new alternator brushes. It has relatively new fuel filter (10K). It has had lots and lots of head work - milled off 8 thousandths for perfectly flat, all the valves, valve seats, valve seals etc were perfectly and precisely worked from the shop that robbie highly recommends. The injectors were completely cleaned and came back to within .6% from the highest flowing to the lowest flowing one and they are all over 302 in flow. Lastly, the two intake plenums, the throttle body, the head, even the valve cover were all completely cleaned as well as the piston tops, the cylinder walls, the block top, etc.

Fellas the results are absolutely amazing. Robbie is an absolute master. The rig always worked well but the thing is totally transformed, well as much as a rig that already worked well can be. The responsiveness and smoothness is easily doubled, perhaps tripled. The engine revs up and down like a high-end, high-precision sewing machine plugged into a rapid response reostat. The powerband seems straighter, more linear, less lumpy then before although lumpy is the wrong word cause it was never lumpy, just less linear than it is now. The economy is incredibly improved although I want some more time to track that cause it seems too good to be true. I am grinnin from ear to ear.

Two things that were not changed at all: the operating temp is exactly the same and the idle is still somewhat stumbly...with the operating temp keep in mind my rig never ever got hot on me so no reason to think that the temps would drop but at least its good (and bad) to know that the failing HG was not producing higher temps, ..., and with the somewhat stumbly idle keep in my that the turbo specd plugs are purposely super cool running and I wonder if at idle that is the thing thats causing some stumbly - I know its not the injectors now which is what I was always wondering about before.

Anyways, another hats off to the masta! As I started, I could not and should not be happier with the results. :cheers: :cheers: :cheers:
 
Turbo,

Great write up! I can't wait to get done with mine and report back to the site.
 
DTAYLOR said:
Turbo,

Great write up! I can't wait to get done with mine and report back to the site.


Thanks D!

Yes please post the results when yer dun!!! :cheers: :cheers: :cheers:
 
Ordered the goodies from C-Dan yesterday. Undergoing the knife either this week or next as a PM.

Although I haven't had any other symptoms I did notice I'd lost a little coolant over the last year. I don't check it that often but made a mark on the overflow tank with a Sharpie about a year ago. It's down a little when comparing cold to cold. I couldn't find any good reason it should have done that if everything was operating properly --- anyone know?

I took an oil sample yesterday to send off to Blackstone so I'd have some pre-HG change data.
 
turbocruiser said:
The responsiveness and smoothness is easily doubled, perhaps tripled. The engine revs up and down like a high-end, high-precision sewing machine plugged into a rapid response reostat. The powerband seems straighter, more linear, less lumpy then before although lumpy is the wrong word cause it was never lumpy, just less linear than it is now. The economy is incredibly improved although I want some more time to track that cause it seems too good to be true. I am grinnin from ear to ear.

Just a little confused by what your saying here. Robbie did mine as well and I noticed an improvement, but I didn't get anything like what you described above. Can you elaborate a little more my friend.
 
Romer said:
Just a little confused by what your saying here. Robbie did mine as well and I noticed an improvement, but I didn't get anything like what you described above. Can you elaborate a little more my friend.


Sure Ken, I'll try, I'm not so sure what other words dutifully describe it but basically the thing revs up so much more rapidly and smoothly and also somewhat more powerfully and predictably, I dont know if it is the valve work, or the injector work, or all the tuneup things, or all the vacuum lines, or all the cleanup things, or perhaps simply how all those things act and interact with the turbo but man the thing just revs up and revs down (assuming its in neutral for the rev down of course) so fast and so smooth. I dont think that there is tremendously much more power, perhaps some ponies more, but it comes in much more rapidly and much more smoothly and as I define, "much more linear" and "much less lumpy." That's prolly the best way of wording it. I think you essentially did the same stuff with the same person and the same shop so maybe its more a matter of tuning things to the turbo but whatever worked it, me likey, me likey alot!!! HTH :D :grinpimp: :D
 
Thanks, that clarifies your Toyota "oh what a feeling" statements. I am sure the benifits are more pronounced with a turbo. Glad your happy and it all worked out.
 
Ken,

Just to augment Turbo's comments a bit on the change my engines have exhibited as well. Mine are completely stock. Directing to the 'quick revving' - my 97 showed the same trait. When you blip the throttle in neutral, it shows notably quicker response and revs much quicker. This engine had a clean throttle body beforehand and was in excellent tune, and the injectors were not cleaned. I attributed this change to the higher compression from the head mill of .010.

Lots of other minor improvements but this trait stands out.

DougM
 
IdahoDoug said:
Ken,

Just to augment Turbo's comments a bit on the change my engines have exhibited as well. Mine are completely stock. Directing to the 'quick revving' - my 97 showed the same trait. When you blip the throttle in neutral, it shows notably quicker response and revs much quicker. This engine had a clean throttle body beforehand and was in excellent tune, and the injectors were not cleaned. I attributed this change to the higher compression from the head mill of .010.

Lots of other minor improvements but this trait stands out.

DougM


Doug, thanks, great to hear some similar results. To clarify something, are you saying that your injectors were not cleaned (additives) before the HG job or that they were not cleaned at all (service shop) for the HG job? If they were not cleaned at all that might make for some increased performance. Also, to clarify something, are you saying that the quicker rev response only happens in neutral? On my rig the revving up is faster at all times, its just that due to the tranny and the momentum in motion and the weight of the rig it wont rev down as fast unless its in neutral where the momentum of the rig, the tranny, the overdrive, etc wont interfere with it revving down as fast. Again, I could not be happier with the responsiveness. Thanks again. :cheers: :cheers: :cheers:
 
cruiserdan said:
We do head gaskets rarely. It is an expensive job "at the dealer" and I will be the first to agree.

I guess a better question to you Dan is how many head gaskets do you guys sell for the 80's?

With Toyota's long term reliability up there with the best of them I find all of this HG talk either to be another one of those things that get's blown out of proportion because of being on the internet and isolated issues stand out on here..........

OR

Something that is a flaw and not something that a so called reliable car should have problems with. It would be wrong to put down the heep guys and Disco guys all the time if so.

I mean look at this forum right now. Almost every thread is about something going wrong with a LC. We are talking about trucks with 100k-150k miles on them and there seems to be every problem you can think of going on.
 
people don't usually post up to say their cruiser is running great :rolleyes:

80 series trucks are now well past their "new car" phase. the price has dropped significantly in the past 3-4 years. they are getting into the hands of people who buy a 10 year old plus truck and fix it themselves. those people think twice before going to a dealer. woody has done a good job making sure anyone seeking help on the interweb comes here. so here they are.
 
Imola Red said:
I guess a better question to you Dan is how many head gaskets do you guys sell for the 80's?


In the last 27 months I have sold 6 gasket sets in my "local market". Two installed in our shop and 4 over the counter. Not very many at all. Compare that to the 3.0 V6. Over 30 in the same time period.
 
What were the trouble years and what were the models for the 3.0 v6? And how many of those vehicles were sold in the local market compared to number of cruisers sold?
 
Rich said:
What were the trouble years and what were the models for the 3.0 v6? And how many of those vehicles were sold in the local market compared to number of cruisers sold?


86 to 89 V6 3.0 liters on 4Runners I'm sure of, there were prolly some similar problems in the 3.0 when it was used in pickups and stuff 89 on? Prolly many more runners sold than cruisers? Dan?
 
turbocruiser said:
86 to 89 V6 3.0 liters on 4Runners I'm sure of, there were prolly some similar problems in the 3.0 when it was used in pickups and stuff 89 on? Prolly many more runners sold than cruisers? Dan?

Yep, I had an 88 3l v6 4x4 short bed, I was the 4th owner and at about 180k when Toyota mailed me a notice. It was for trucks that were either UNDER 100k or that had HG problems UNDER 100k. I was pretty impressed that they mailed the 4th owner and were basically making good on any problems prior to 100k. I certainly wasn't thinking we should all sue them :rolleyes: but that's just me I guess...

Truck never did have any HG problems, and was stolen back in 2002 with 285k on the clock and no major motor service...
 
tiorio said:
Yep, I had an 88 3l v6 4x4 short bed, I was the 4th owner and at about 180k when Toyota mailed me a notice. It was for trucks that were either UNDER 100k or that had HG problems UNDER 100k. I was pretty impressed that they mailed the 4th owner and were basically making good on any problems prior to 100k. I certainly wasn't thinking we should all sue them :rolleyes: but that's just me I guess...

Truck never did have any HG problems, and was stolen back in 2002 with 285k on the clock and no major motor service...


Wow, good to know, except sorry about the stolen thing, that 88 Runner I had is still runnin strong at alot over 240K at this time!!! Hard to be better than that HG problems "in its youth" (relatively speaking at 100K compared to 240K now) or not. Why we're so suit happy is a majorly embarrasing mystery. :cheers:
 
My '92 FJ80 is sluggish as hell, but I think that's just the 220k on the 3fe, and not anything wrong with it. Just in case tho, I'm thinking about getting the head reworked (valves reground, probly new springs and oil seals, shave it, etc.).

Anyone have any advice on anything specific I can/should do to it? I've never had this one done before, and I'm curious as to what other people have done, and if it has had any affect.

Thanks!

-Jared
 
As promised an update on my gas mileage now ... 14.5 mpg city!

So far no highway driving at all although I'll try that soon and record the results.

Keep in mind this 14.5 is with my spirited driving style. The first two tanks that I ran with while trying to take things slow after all that wonderful head work recorded almost 16 mpg city!!!

I'm looking forward to finding the highway mpg! Thanks again to the masta!!!

:cheers: :cheers: :cheers:
 

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