SSEBONNE4EVA, Yup, as far as I can see that would work just fine. BUT, that is just my opinion,, -the bigger the air space, the better I'd think. But if you use a small enough EGR tube, then "you're in business."

I had a great telephone conversation with Bill some time ago, and I know he expressed the same concern about what negative effect there might be when using the small EGR tube. I can report to everyone that I have two cars in my family now running the KenCo EGR tube, which is certainly pretty small, (-I just went out to the garage and measured the KenCo EGR tube, and actually the outside diameter is 1/2", and the inside diameter is just a touch over 3/8") And quite happily they are performing just perfectly. The '99 Bonne has run for a year now, and the '98 LaSabre has only been a few weeks.

Also, if it is any comfort, I remember someone a long time ago replied about the size of the actual passages in the EGR valve itself as being quite small. Personally, I haven't taken one of these EGR valves apart yet, but I really am curious about how small those passages probably are. If that is the case, then the 3/8" tube would be no factor at all. -I also just had the thought, that I have to suspect that maybe Ken Sprag himself had already checked into that when deciding on the size to make the tube. -just a thought. :?

The actual inside diameter of the pintle valve bore is .380” to .390” depending on the EGR valve.

That explains the EGR very well thanks 57....
If memory serves me correct when I had my 90 EGR appart it had several small passages. The digital EGR provides 7 different combinations of these passages
to produce the correct bleed rate. I guess running around 1500 - 2000 rpm most of the time is not running the full bleed rate anyway so the only time your using the 3/8
passage is maybe under load at 3/4 throttle so I think the Ken co. design is just fine.

Just had a thought. What prevents me from making a insert pipe that would be pressed into the ID of the original tube. All you would have to do is remove the throttle and press it in.
Anyone have an original pipe they could mail me so I can experiment? My friend has a lathe. I'm thinking a 1/2 " pipe with a couple of ribs down the bottom would do it.
This would redirect the heat away from the plenum and would be an easy preventative maint.
As far as the epoxy method, again I have used this stuff on radiators and it can't handle the expnsion and contraction. It cracks. I would not trust it on a plastic plenum that does the same.

Thanks Ron !! (-see, I knew somebody out there had the numbers,,,)

Say Bob, I just checked the two different numbers I had a home for the LIM gaskets. -and guess what I have discovered that one of the numbers I used is listed in the Victor book as being for the supercharged engine ooops (-man, now I'm wondering which of the three outfits got that set :?: )

Anybody out there got any ideas about what the difference might be :?:

UPDATE: After a little more than one month, I mailed out the first pipe and sleeve to auto trainy in NJ. If this hectic rate of demand keeps up, I'll run out of extra kits sometime in September!

Let us know how it goes, Frank. Take some pix if you can.

FWIW:
The correct name / spelling is ThermoSteel !



Says for High-Temp metal repair.
(One of the few materials with a chance of repairing exhaust manifolds?)
(2400°F oughta' do it!)
Wonder if, in this UIM repair scenario, there would be any issue about bonding with "plastic".

Small 3 oz jar for $6 or $7 .
Also currently at http://www.acehardware.com and
http://www.midwayautosupply.com/deta...ption.asp?9623

Google for current vendors

Please don't dig up old topics. If you have a current problem, please start a new topic.

Some old topics can really be left in the dust when compared to current information.
While the Gearheads here believe the information in this topic is still valid, that may not always be the case in older topics.

http://www.bonnevilleclub.com/forum/...e=article&k=38
This link should tell you all you need to know. Start a new topic if you have any questions.