jzack

Thank you! I've been running this same truck for 30 years now in March. It's never been out of service for more than a few weeks at a time. Our company also has some brand new Kenworths and Petes but this old CH just plain drives better and is more comfortable.

Well, I've run this new .5 stage turbo from Rochester Diesel for a couple weeks now and I'm really impressed with the performance. It's not laggy at all, in fact it spools a little quicker than my 350 turbo. Boost is now a solid 35-38 PSI and that's with my stock 350 injectors and the Blixxton at 30%. The best part is my EGTs are now 150-200F cooler than before. I haven't seen it go over 800F even on a hard pull. I may put it on the dyno sometime as I'm curious to see what it's putting to the ground now. It wasn't a "direct" bolt on however as the oil feed line had a different fitting so I had to replace the entire line with SS braided and new fitting like what's on the E-Techs. Cheap insurance though. Comparing the compressor outlet between the two in the pics you can really see the difference in flow. A lot more volume of air is being moved and you can really hear it in the cab now at full boost.

Not a bad interior for a day cab. Cloth with carpet and wood dash. Lots of foam sound deadening in the headliner and other places too. I think Mack called it the "Preferred". One step below the "Elite". Much better than today's trucks with the snapped together playskool plastic panels that buzz and rattle all day.

Sure, here are some pics. Just a one stack Mack with a window in the back but it has got the job done for over thirty years now. I could drive a 2024 Kenworth T880 but honestly this truck drives and handles better and has a nicer interior. Just a solid little truck.

You're welcome! As an aside, I've been running a Blixxton on my 94 E7350 since 2007 with great results. Having a pyrometer really helps to monitor engine temps in July and August when pulling long hills. Rarely did I have to back off the accelerator but sometimes (very rare) exhaust temps would reach 1,100F. I leave it on 30% most of the time and the advertised power increase seems accurate as I could run side by side with our 99 E7460. While the boost isn't as high as the 460 (30psi vs 35psi) the 350 has higher compression pistons so you don't need as much boost to make similar power. The downside is heat and cylinder pressures. The smaller turbo on the 350 doesn't help in the heat department either. But it does build boost much faster than the 460. Always tradeoffs! Since I'm on my original turbo at 1.4 million miles I decided to be pro-active and order a new one from Rochester Diesel. I told them my situation with the Blixxton on a E7350 and they said they had the perfect turbo for me. It's a hybrid they build themselves using the exhaust side of a 427 and the impeller/boost side of a 460. It will bolt right on they say. I'm hoping it will lower exhaust temps and give me a little more top end boost. We'll see. I'm sure the boost will build a little slower but hopefully I can live with it. Like I said, always tradeoffs. I'll post back with results in a few weeks.

Here is a link to another tuner that looks very similar to the Blixxton. https://www.parleysdieselperformance.com/products/ag-diesel-solutions-30000-performance-module-for-1993-1997-mack-e7-engines?gad_source=1&gclid=Cj0KCQiA2oW-BhC2ARIsADSIAWpF6FCfM98UcKBhACMQioZ6npOyfdx9fTi2lRbNPemJIep8a9Aj8-IaAjSSEALw_wcB

Here is a link to another tuner very similar to the Blixxton. https://www.parleysdieselperformance.com/products/ag-diesel-solutions-30000-performance-module-for-1993-1997-mack-e7-engines?gad_source=1&gclid=Cj0KCQiA2oW-BhC2ARIsADSIAWpF6FCfM98UcKBhACMQioZ6npOyfdx9fTi2lRbNPemJIep8a9Aj8-IaAjSSEALw_wcB

Yes, but I see they are no longer available. Here is a link to another tuner very similar to the Blixxton. https://www.parleysdieselperformance.com/products/ag-diesel-solutions-30000-performance-module-for-1993-1997-mack-e7-engines?gad_source=1&gclid=Cj0KCQiA2oW-BhC2ARIsADSIAWpF6FCfM98UcKBhACMQioZ6npOyfdx9fTi2lRbNPemJIep8a9Aj8-IaAjSSEALw_wcB

Modern 2-stroke snowmobiles will run backwards by pushing a button on the handlebars for a reverse "gear".

Put a Blixxton on it. That's what I did with my 94 E7350 years ago and it really wakes up the engine. Great low end throttle response just like a mechanical with the puff limiter bypassed.

Here is a follow up for those who came here on a search for a fix for cracking fuel lines. After going through multiple sets of lines from Mack, all developing cracks in multiple areas, I have since moved on to fuel lines from PAI for the E7. Thier lines actually look like my originals, a full .25" diameter, double nut with vibration damper at the head. So far so good, I'll keep this updated. Now, with that experience, and an in-frame scheduled for the first week of November, I'm seriously thinking of getting the PAI re-build kit instead of the Muzzle Loader from Mack and probably save some serious money. I've always been a "Mack only" parts guy, but so far, I am very impressed with the PAI fuel lines.

Thanks for all the tips on the input seal, I'll make sure to look for a groove in the shaft. I might try a novel way to pry out the seal I saw on a video the other day. The guy carefully drilled a small pilot hole in the top of the seal. He then screwed in a tall screw enough to grab the seal. Then grabbed the top of the screw with a pliers and used the top of the input shaft for leverage to pop it right out. No mess, easy peasy. If that fails, I can try the messy way!

Well, I'm back at work! All that was done was the re-built pump and replaced all the frost plugs on top the head. Mack said everything else looked good. Fingers crossed I guess. The truck seems to sound and run exactly as it did before except a little stronger. The only issue I have had so far is a leaking input seal on top the steering box. Hopefully it just needs a new seal. Maybe the over-run caused higher pressure in the system blowing past the seal? I'm also hoping my issues with cracking injector lines could be solved. There is much less vibration on the lines now with the new pump. I've had to replace lines 4-6 several times the last six months. Oh, and after driving the 2023 KW T880 for a week, I wouldn't trade my 94 Mack even up. Seriously, trucks have not come as far as you would think in the past 28 years. The ride in that KW was horrible.

Ok, I'll ask about dropping the pan to inspect the cam. The mechanic working on it has been working on Macks for 29 years and really knows his stuff so I trust his opinion. Even though this engine has 1.3M miles it wasn't showing any signs of being on its last legs. I've maintained it since new with regular filter/fluid changes, did the overhead every 300k or so. In fact, the overhead was just done in Dec. along with new injectors.