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Search: Posts Made By: v40163
Forum: Diesel   06-28-2014
Replies: 274
Views: 89,822
Posted By v40163
Wink Re: Perkins 4.108M DIY Rebuild -- A Narrative

Edit: Couldn't you have simply put the pin of your dial indicator down the injector hole to measure TDC? It would have saved pulling your valve spring etc.[/QUOTE]

That's exactly what I did when I...
Forum: Diesel   04-11-2013
Replies: 274
Views: 89,822
Posted By v40163
Re: Perkins 4.108M DIY Rebuild -- A Narrative

Thanks for taking the time to do that for me PorFin. Did you use a dial caliper or a micrometer for the measurements?
Forum: Diesel   04-10-2013
Replies: 274
Views: 89,822
Posted By v40163
Re: Perkins 4.108M DIY Rebuild -- A Narrative

Por Fin, I appreciate that.

SloopJonB, I know, I was surprised too. They've got everything else but that.

Capnblu, I wanted to avoid turning the crankshaft because I didn't want to have to...
Forum: Diesel   04-10-2013
Replies: 274
Views: 89,822
Posted By v40163
Re: Perkins 4.108M DIY Rebuild -- A Narrative

Ultimately, yes I am--either by it being explicitly specified in the manual or by subtracting the piston diameter (which is not in the manual) from the liner ID (which is there).

I can't find it...
Forum: Diesel   04-09-2013
Replies: 274
Views: 89,822
Posted By v40163
Re: Perkins 4.108M DIY Rebuild -- A Narrative

PorFin,

Where did you find the piston-to-liner clearance value for your engine? I've been over my manual twice with no luck...

Ray R
Forum: Diesel   04-08-2013
Replies: 274
Views: 89,822
Posted By v40163
Re: Perkins 4.108M DIY Rebuild -- A Narrative

More info on oblique cut connecting rod caps:

Because of the large diameter of the crankpin to increase bearing area and decrease bearing load, the width of the bottom end of the con rod is...
Forum: Diesel   04-07-2013
Replies: 274
Views: 89,822
Posted By v40163
Forum: Diesel   04-06-2013
Replies: 274
Views: 89,822
Posted By v40163
Re: Perkins 4.108M DIY Rebuild -- A Narrative

SJB,

I found the answer to your question on rrconnectingrods.com's website: "The angled rod cap is used on small bore engines or for camshaft clearance."

Ray R
Forum: Diesel   04-06-2013
Replies: 274
Views: 89,822
Posted By v40163
Re: Perkins 4.108M DIY Rebuild -- A Narrative

Have you by chance had any dealings with either the Chinese or Indian arms of Caterpillar? Any idea where I might start poking around?
Forum: Diesel   04-05-2013
Replies: 274
Views: 89,822
Posted By v40163
Re: Perkins 4.108M DIY Rebuild -- A Narrative

Are the Chinese parts interchangeable with their British cousins?
Forum: Diesel   04-05-2013
Replies: 274
Views: 89,822
Posted By v40163
Re: Perkins 4.108M DIY Rebuild -- A Narrative

I certainly could do as you have suggested and install 0.010 inch undersize bearings and then "tune" the crankshaft to match the installed bearings by grinding and re-nitriding (Tufftride is the...
Forum: Diesel   04-05-2013
Replies: 274
Views: 89,822
Posted By v40163
Re: Perkins 4.108M DIY Rebuild -- A Narrative

I know that Perkins engines were used in a lot of different brands of equipment so they may have been the same!
Forum: Introduce Yourself   04-05-2013
Replies: 4
Views: 5,703
Posted By v40163
Re: Perkins 4-108M Switch details

This is five years too late but what the heck...

Diesels do not require any electricity to run per se. On my Valiant (which has separate start and preheat switches) the ignition switch simply...
Forum: Diesel   04-05-2013
Replies: 274
Views: 89,822
Posted By v40163
Re: Perkins 4.108M DIY Rebuild -- A Narrative

Thanks for the kind words. I'm the new guy here and my reply kinda turned into a narrative of its own!

Serrations: Hmm, good question. I guess they were machined, I can't imagine that they were...
Forum: Diesel   04-05-2013
Replies: 274
Views: 89,822
Posted By v40163
Re: Perkins 4.108M DIY Rebuild -- A Narrative

I did an internet search, including the ag/ind sites with no luck. I did get an email from TADiesel this morning saying that they had the rod bearings that I was looking for, but after quizzing them...
Forum: Diesel   04-05-2013
Replies: 274
Views: 89,822
Posted By v40163
Re: Perkins 4.108M DIY Rebuild -- A Narrative

PorFin,
Sorry, I just signed up for this list last night when I sent my reply. I saw the 2007 date in your posts and assumed that that was the post date! It looks like you're doing a great job. I...
Forum: Diesel   04-04-2013
Replies: 274
Views: 89,822
Posted By v40163
Re: Perkins 4.108M DIY Rebuild -- A Narrative

I wish I'd been around when you were rebuilding your engine. I am currently rebuilding a Perkins 4.107 and have found that the connecting rod IDs are out of limits. I'm trying to figure out what to...
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