Search the Community

HelloDuring a routine valve adjustment the shop noticed that my exhaust manifold is cracked between 3 and 4. I plan on replacing with an aftermarket, they are reccomending the BD manifold, what is everone using? Is one better than the other? Also can about a 100 deg higher EGT than normal for the last 2 years that i could never explain no boost leaks whatsoever poor economy be chaulked up to the cracked manifold???Thanks eveyone

See the thread I started here - saves reposting the pics http://www.cumminsforum.com/forum/98-5-02-powertrain/441910-pdi-exhause-manifold-fitment-issue.html#post4555099 thoughts? thx --- Update to the previous post... man what a drama - cut it off and will remake a bracket later Then had the manifold back on but all 4 wholes are threaded - not like 2+2 with stocker. So 4 hours later its back off - 2 drills couldnt fix it and I had to manually file it - now its raining :banghead: Tomorrow back on - then the he351cw and some other pain

Anyone have any input on the exhaust manifold I should get? I'm undecided between the BD and ATS. While the BD has two ports driled and tapped and the ATS has one. The ATS also comes with a high temp black coating and won't look like crap after a few seasons. As far as quality between the two I have no idea. Currently the best price I have found shipped to my door is $425.00 total.

I am going to be changing my Exhaust Manifold in my 99 Cummins and not sure what to torque the bolts at. I was trying to search and came up with 23, 32 and 44 so I have no idea what it should be for a 99. Any help would be appreciated. Thank You

While checking things under the hood with the truck running, I reved the engine and noticed an exhaust leak. The leak was where the exhaust manifold bolts up to the turbo. I tried to tighten the bolts but they didn't want to budge. Should I just leave it or do you think I need a new gasket there?

Since the VNT plan went TU I am going another route. It’s a little more money, but hey that happens :-) I got a killer deal on a set of DDP 50's, one that I couldn't refuse. Nozzles were always part of the plan, but never in the immediate budget, but like I said I couldn't refuse these. I have wanted a different turbo for a while, as the VNT indicated. My main goal for a new turbo was to reduce the insane back-pressure created by the stock turbine housing and wheel. I don't need much more out of the compressor side, just more efficient. I am trying to decide between a Garrett Stage 2 or a modified Stage 3. The two turbos both have the same turbine and turbine housing; just the compressor wheels are different. One is a 60/80 the other is a 64/88. Both are water-cooled ball bearing units and should spool very fast and provide 35-40 psi of boost with low drive pressure. To ease my mind when the boost goes near 40 I am also going to be installing a set of ARP 425's. Most say I don't need them at my boost levels, but I don't want to find out the $$ way I need them. I will also be installing a set of manifold and turbo blankets. They will improve spool even more, and keep underhood temps down. Lastly, if there is any funding remaining, I will be getting an Edge Insight to monitor my OBDII readings, post-turbo EGT's, and oil pressure. The goal is to be done with wrenching by the 1st week of April, I have a busy schedule from now until the middle of March, so it will mostly be parts gathering for the next month and a half then wrenching.

My exhaust manifold has a small crack....doubt there is any way to repair this besides replacement.Anyone have suggetions on what aftermarket manifold to buy? not sure what mods I will end up doing to this truck down the road....nothing to extreme though. Just want somthing that will help it breathe better,won't crack and won't brake the bank