Monster 6 Turbo Diesel into a 101.

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Originally Posted by nrs91

its not the mount plates that are the issue its the rubber mount style. Look at the QT services HD captive mounts (the engine wont drop out if the mount fails)

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It's the angle of the mounts, the rubber mounts aren't particularly failure prone but the angle required for vibration isolation and vertical support on an alloy V8 is completely different to the angles required for vibration isolation and vertical support on a cast iron inline vertical diesel.

The V8 mounts are at 60 degrees from horizontal, I will bring mine back to around 40 degrees from horizontal.

I have only had one rubber mount fail. It was a very old rubber mount and the vehicle had been crashed pretty hard at the time.

The QT captive mount design is too rigid and not suitable for diesels IMO.

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Originally Posted by Dougal

It's the angle of the mounts, the rubber mounts aren't particularly failure prone but the angle required for vibration isolation and vertical support on an alloy V8 is completely different to the angles required for vibration isolation and vertical support on a cast iron inline vertical diesel.

The V8 mounts are at 60 degrees from horizontal, I will bring mine back to around 40 degrees from horizontal.

I have only had one rubber mount fail. It was a very old rubber mount and the vehicle had been crashed pretty hard at the time.

The QT captive mount design is too rigid and not suitable for diesels IMO.

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mine uses 200Tdi mounts which are the same as V8 IIRC, the angle of the mounts trys to tear the mounts apart delaminting them... when i use the QT mount which is based on a suspension bush it will ensure that if the worst happens the cummins wont travel far (wouldnt want to pick it up from the side of the road) but also gets rid of the angle issue. with four of these mounts (two for engine two for boxes) the whole drivetrain should be well held and damped... also if i get abit cocky I could play with different spec polybushes to get the right vibration damping characteristics but doubt id bother... even when the PAS pump was touching a chassis web and the compressor touching the wing (both issues fixed now) the vibration/noise wasnt much greater

Have you considered transaxle mounts from Fwd cars? Similar style to the qt, but much larger to allow more vibration isolation.

I hadn't, as I plan to use the existing mounts, but mount them like the truck gearbox mounts in a much flatter position, around 20 to 30 deg. This will still centralise the engine. I also plan to build in an un bolt able catch plate (in the event of it ever being down side up).. The Nissan in the old 101 had a few chain links bolted between each mount for the same reason. Here's a pic of the fuel pump in relation to the LH seat mount. The compressor head is under this plate and about 15mm from the engine bay side wall.

Starter clearance is a similar 15mm off the RH Chassis Rail, so I guess that's where it'll sit! The hose between the engine and chassis is the brake vacuum line.. something I'd forgotten about until I was removing the V8... I'll prob source one of those small belt driven vacuum pumps off a Peugeot Diesel or similar.

And here's a shot of the front prop temporarily in place (another part that fell of Bojans 110 that's parked in the yard!):D. The angle is a lot better and with the 3.54:1 diffs the drone should no longer be there! :)

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Originally Posted by Dougal

Have you considered transaxle mounts from Fwd cars? Similar style to the qt, but much larger to allow more vibration isolation.

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could be a possibility but the QT mount is a straight replacement so i will give that a go first, im pretty certain four suspension bushes will sufficiently dampen the 6BT as it runs much smoother than a four pot.

@Simon
LRB381 Ford Transit Alternator is what I used for 12v charging and Vacuum for the brakes. Recon ones are around the £100 mark however i believe a Td5 or a TDCi alty also has a vacuum pump on the back :)

Simon your clearance looks similar if not better than mine.. Prop looks good but does look like the box is tail end down so will probably improve in final fitment. If you struggle for rear prop room you can angle the rear diff up and put a small lean back on the box... Also Rakeway sell a short rear output, reduces rear output by 75mm and goves the perfect opportunity to upgrade to x-brake disc handbrake

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Originally Posted by nrs91

Simon
LRB381 Ford Transit Alternator is what I used for 12v charging and Vacuum for the brakes. Recon ones are around the £100 mark however i believe a Td5 or a TDCi alty also has a vacuum pump on the back :)

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Hi Nick.
I'm retaining the 24v start and charge as I didn't want to have to buy another starter or alternator... I have provision for 2 x N70ZZ's within the new LH fuel tank (now containing diesel). Was going to look into driving something of the alternator but then thought the old Pug 205 pump would be easy slung under the flat drive belt. I have a spare flat type alternator pulley that came of a MF 8240 alternator... It'll be near to running when I get to that bit.... Have mounts to make, exhausts, 4 core into the rad, intercoolers, gear linkage, props, sump to scallop out, handbrake, work out the air clutch, etc etc etc yet! Hoping Ebay UK will come up with the goods on the pump! :)

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Originally Posted by nrs91

Simon your clearance looks similar if not better than mine.. Prop looks good but does look like the box is tail end down so will probably improve in final fitment. If you struggle for rear prop room you can angle the rear diff up and put a small lean back on the box... Also Rakeway sell a short rear output, reduces rear output by 75mm and goves the perfect opportunity to upgrade to x-brake disc handbrake

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Ha! Yeah, I have the tail of the box lower (or should I say engine nose higher to clear the Salisbury pumpkin), and had looked at maybe lifting the rear diff nose a small amount. Looked at the Rakeway handbrake assy too.. They any good? Would that disk hold a 2.5 tonne 101 with big tyres on high ratio diffs with a loaded trailer?