Popular Post Snagger Posted February 17, 2022 Popular Post Share Posted February 17, 2022 I had a bit of fun with a friend in Seattle today, having a good look at his collection. He has a D4, 1983 109 County Station Wagon (200Tdi) a V8 late Discovery 1 being prepared for sale, another with a 4.6 GEMS engine and R380 that he is finishing the conversion, a 4.6 D2 and an early 90 that he has just put on a new chassis and bulkhead with 35” tyres on 8” Nakatenga rims with a Cummins and LT77. He had me drive around the local back roads in the 109 and the 90. Great fun. The 90 was a bit vague on the steering with those tyres, but the engine was superb and didn’t feel out of character at all. Between the big tyres and 1.22 LT230, it is geared tall but the engine pulls like a train - I didn’t need 1st even pulling away on the steep hills. I took pictures of the 4.6 and Cummins to tease you all!😆 The 4.6 GEMS has a 4.0 plenum, but that was increased by 15% volume to fit better trumpets (from a TVR, I think he said) and to accommodate the bigger rocker covers. It has a performance cam, because why wouldn’t you? 7 Quote Link to comment Share on other sites More sharing options...
Nonimouse Posted February 17, 2022 Share Posted February 17, 2022 That would be the crate engine cummins then. I read your post and was wondering how an LT77 would stand a 5.9! Quote Link to comment Share on other sites More sharing options...
Gazzar Posted February 17, 2022 Share Posted February 17, 2022 How modern is that engine? Is it a common rail system? Quote Link to comment Share on other sites More sharing options...
Nonimouse Posted February 17, 2022 Share Posted February 17, 2022 3 hours ago, Gazzar said: How modern is that engine? Is it a common rail system? https://www.cummins.com/engines/repower Very modern, but designed as a re-power Quote Link to comment Share on other sites More sharing options...
Gazzar Posted February 17, 2022 Share Posted February 17, 2022 That's interesting. Thanks. Quote Link to comment Share on other sites More sharing options...
Nonimouse Posted February 17, 2022 Share Posted February 17, 2022 really lovely engine - very pricey Quote Link to comment Share on other sites More sharing options...
cackshifter Posted February 17, 2022 Share Posted February 17, 2022 Ashcrofts are offering an adaptor for that engine I believe linky 1 Quote Link to comment Share on other sites More sharing options...
Escape Posted February 17, 2022 Share Posted February 17, 2022 Interesting rocker covers on the 4.6! Any more info on those? Quote Link to comment Share on other sites More sharing options...
monkie Posted February 17, 2022 Share Posted February 17, 2022 How does it sound? Can we have a video to go with the pictures? Quote Link to comment Share on other sites More sharing options...
Snagger Posted February 17, 2022 Author Share Posted February 17, 2022 I’ll ask him for video. The Cummins cost him $7k, if I remember right,y, and yes it is a common rail system with electronic throttle and was a crate engine. It sounds not that different from a TD5 externally, maybe with a slight amount more gravitas, but close. He hasn’t added sound proofing yet and there are a few items rattling live the rear view mirror which made it a mite noisy, but not terrible. The gearbox is an Ashcroft HD LT77. Not impossible that the mating system came from them too. It just keeps pulling. The owner has it on 35” Wranglers with standard diffs and a 1.22 LT230. I was pulling away on hills in second (hills in Washington state are no small matter) and rarely hit fourth on the straights. Fifth is for highways only, but you can be really lazy with gear changes; it just has so much torque and a wide torque band. The turbo sounds superb when it spools up. I don’t know much about the 4.6 rocker covers other than that they are big and caused the plenum extension. He has been through a few front covers to chose the one that fits the engine bay best. 1 Quote Link to comment Share on other sites More sharing options...
smallfry Posted February 17, 2022 Share Posted February 17, 2022 6 hours ago, Escape said: Interesting rocker covers on the 4.6! Any more info on those? Offenhauser I think, or possibly Mickey Thompson. I used to have a pair and I dont remember selling them. Real Steel in Uxbridge( near Heathrow Airport for our overseas viewers) used to do adaptors to enable you to fit Ford or Chevy covers. I dont know if they still do ? Quote Link to comment Share on other sites More sharing options...
Nonimouse Posted February 18, 2022 Share Posted February 18, 2022 14 hours ago, Snagger said: I’ll ask him for video. The Cummins cost him $7k, if I remember right,y, and yes it is a common rail system with electronic throttle and was a crate engine. It sounds not that different from a TD5 externally, maybe with a slight amount more gravitas, but close. He hasn’t added sound proofing yet and there are a few items rattling live the rear view mirror which made it a mite noisy, but not terrible. The gearbox is an Ashcroft HD LT77. Not impossible that the mating system came from them too. It just keeps pulling. The owner has it on 35” Wranglers with standard diffs and a 1.22 LT230. I was pulling away on hills in second (hills in Washington state are no small matter) and rarely hit fourth on the straights. Fifth is for highways only, but you can be really lazy with gear changes; it just has so much torque and a wide torque band. The turbo sounds superb when it spools up. I don’t know much about the 4.6 rocker covers other than that they are big and caused the plenum extension. He has been through a few front covers to chose the one that fits the engine bay best. A friend in 'Murica (top end You Tuber and ec Tech Editor) put one in his Jeep TJ, to replace a 2.5. He did the install with the Cummins Design Guru. He's never stopped raving about it. It has more grunt than a in line 6. Quote Link to comment Share on other sites More sharing options...
Escape Posted February 19, 2022 Share Posted February 19, 2022 On 2/17/2022 at 8:20 PM, smallfry said: Offenhauser I think, or possibly Mickey Thompson. I used to have a pair and I dont remember selling them. Real Steel in Uxbridge( near Heathrow Airport for our overseas viewers) used to do adaptors to enable you to fit Ford or Chevy covers. I dont know if they still do ? Aah yes, when I was looking for rocker cover spacers for my 5.0 I did come across adaptor plates to fit Ford or Chevy covers. That would give you lots of options for different covers. I'm just looking for a bit of extra height to clear the rolling rockers so had spacers made for the standard covers (by Whengparts, very happy with both the product and service). If higher covers were to exist for the Rover V8, that would of course be a more elegant and lighter solution, and one less joint that can leak. 😉 Filip Quote Link to comment Share on other sites More sharing options...
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