Ken-Co Repair Kit for Intake - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-18-2005, 10:15 AM   #11
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Default intake

If anyone has had their Delphi UIM fail please chime in here.
Don't forget the port is surrounded by coolant.
I think we are over analyzing here.
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Old 03-18-2005, 10:29 AM   #12
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Default Re: intake

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Originally Posted by SSEBONNE4EVA
I think we are over analyzing here.
Agreed. That'* what I was getting at in my post earlier in this thread. IMO, the lower intake gaskets are something we should be MORE concerned with.
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Old 03-18-2005, 10:49 AM   #13
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If I am not mistaken does it not seem that all the used Delphi manifolds are originally used on cars (01-05) that have the small diameter egr tube so that they don't touch? Using one on a old design (95-00 with large diameter egr tube), where the UIM and egr tube touch, may still fail in the future. I guess time will tell right?

Quote:
Originally Posted by SSEBONNE4EVA
If anyone has had their Delphi UIM fail please chime in here.
Don't forget the port is surrounded by coolant.
I think we are over analyzing here.
Why are you so against putting in a small diameter egr tube? If you already have everything apart it would be silly not to. The Ken-Co kit with a Delphi manifold should last longer than the rest of car.
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Old 03-18-2005, 11:26 AM   #14
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"tic - toc - tic - toc - tic" -sounds to me like the "time-to-failure" clock,,,,

Upon re-reading this whole thread, it just seems to me like a difference in the level of concern with us diverse bonneville owners.

I can tell you for sure, after just about losing the engine when all the "death-cool" coolant dumped into the oil (-and it all happened in a few short minutes) when the lower gaskets let go on the '99, I will always replace the LIM gaskets anytime I'm into one of these Series II engines

And as far as the UIM goes, I sure have to agree with gmtorque. When it comes to the health and longevity on my engines, "I just ain't no risk taker." It is a very crappy feeling when you are out in the middle of nowhere in Wyoming in the winter with the cold winds blowing, and have any kind of disabling car failure. Especially with "family on board." When it comes to automotive maintenance and repair, I just really feel better with "going the extra mile" in attempting to elminate possible failures. One of the old sayings that comes to mind is, "There is no time like now."

No, it definitely is not "over-analyzing." The later factory designs with the smaller tube and air gap was no accident. It is done for good reason. -like taking the heat off of the plastic. And don't you really have to give Ken in Canada a lot of credit for not only coming up with the modification idea in the first place, but then going the extra mile in making up the kits for those of us who would rather buy one, than having to build our own. We really should give credit where credit is due.

Anyway, GOOD DISCUSSION guys, and as always, this bonneville club is one of the greatest things tools on the internet, as far as I'm concerned.

Keep up the good work !!

Harry
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Old 03-18-2005, 11:45 AM   #15
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Harry...

I see your point. Yes, car maintenance is very important. I religiously maintain my vehicles and as a result get tons and tons of reliable miles out of them. However...

To my knowledge (please correct me if I'm wrong), we haven't found a single incident of a Delphi upper intake fail on this board. Given that statistic, why spend so much time trying to correct an issue that we haven't seen fail yet? And, if we are going to improve upon a potential issue (or at least make it bullet-proof), then that will just give us a false sense of security simply because the lower intake gasket issues still lurk under that UIM. So, in a sense, by not having to fix the upper, what are the odds that somebody will just tear into the upper half of the engine just to replace the lower intake gaskets?

It seems that most people say "I have a coolant leak, I need to fix my upper intake, and while I'm at it I'll do the lower gaskets, too". Well, if that upper is bullet-proof, how often will the lowers really get changed? Especially if the lowers seem to be the true culprit on these engines.

At least if somebody witnesses a coolant loss they'll pull the upper off, most likely see that it'* fine (if it'* a Delphi) and from there remove the 6 bolts holding the lower to the block.

OK, OK..enough rambling!
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Old 03-18-2005, 11:56 AM   #16
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All in all I think we are all on the same page.

There are options and you can choose which method you feel is needed to repair your own car. Most import being that the LOWER INTAKE GASKETS are almost sure to fail regardless of what we do with the EGR tube situation. GM probably should have put the lower intake manifold gaskets into the maintenence schedule at 60,000 miles and then people would know to replace them every few years.

Regardless of the intake, oil pan, and front cover leaks I still love the H bodies and plan to own several more in the future. A $1000 of oil/coolant leak repairs is a small price to pay for value, looks and performance that the GM H body provides. I am already looking forward to going shopping in a couple years for a 97-99 supercharged version of the Bonneville.
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Old 03-18-2005, 01:27 PM   #17
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gmtorque, YUP You are "right on the money."

Question: Do you have any idea at all how a person may go about finding out (from GM -or any other bona fide source) what was the engineering reason for putting those four little cracks in each of the coolant ports on the GM gaskets.

I guess I might try to contact FelPro and Victor too, see what they say.

Hey I 'm right with you all the way on LOVIN' the GM "H" body cars. This '02 Bonny is my fourth, the first was an '87 olds 88, the second a Buick LaSabre, the third the '99 Bonny (now the wife'* car) and MINE - the '02. Man I'm "stuck on Bonnevilles" for now, no matter how much I cuss about the annoying things

Thinking more about the LIM gaskets, you know, the thought just occured to me that us old hot rodders used to put aluminum intake manifolds on our v-8'* through the years, using the standard old "composition" gaskets, and NEVER HAD A GASKET FAILURE. And al lot of those engines got beat on real hard. Now just why in the heck did someone have to come up with these goofy thick plastic pieces of junk

I sure hope the aftermaket gaskets hold up better.

Have a great day !! (in spite of ourselves,,)
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Old 03-18-2005, 01:30 PM   #18
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-Oh yes, and I forgot, We really do need to show our appreciation to people like KEN SPRAGG who made his parts available to us (-through dealers, or whatever)

THANKS KEN for your kit
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Old 03-18-2005, 02:04 PM   #19
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Quote:
Originally Posted by gmtorque
All in all I think we are all on the same page.

There are options and you can choose which method you feel is needed to repair your own car. Most import being that the LOWER INTAKE GASKETS are almost sure to fail regardless of what we do with the EGR tube situation. GM probably should have put the lower intake manifold gaskets into the maintenence schedule at 60,000 miles and then people would know to replace them every few years.

Regardless of the intake, oil pan, and front cover leaks I still love the H bodies and plan to own several more in the future. A $1000 of oil/coolant leak repairs is a small price to pay for value, looks and performance that the GM H body provides. I am already looking forward to going shopping in a couple years for a 97-99 supercharged version of the Bonneville.
Yes, I agree with you that GM should have put the lower gaskets on a maintenance schedule. That could have at least increased their reputation since it seems to be a "known" issue.

Like yourself (and Harry), I'm stuck on the Bonneville'* too. I'm on my 3rd one (started with an 87, bought the 99, bought a 93 and sold the 93. 87 is long gone). I'm going to look at another one tomorrow. That one'* an LN3, though! 91 SE. These small coolant issues are very minor in the grand scheme of how reliable these cars are overall...not to mention the styling, performance, etc., etc., etc.
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Old 03-18-2005, 03:56 PM   #20
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Vital49, DITTO AND DITTO

Right ON

(-I still think it might be fun to have the supercharged version sometime,,,,, )

-trouble is, everytime I consider one, I can't block the thought out of my mind that it just may very well have been fairly heavily thrashed,,,,

Guess I'll just be satisified with taking the old hod rod '57 chevy truck out once in a while when I feel the urge to "stand on it." (the dual AFB'* on the tunnel ram'd SB400 sure do sound pretty)
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