Navigator engine swap
New User
Joined: May 2008
Posts: 24
Likes: 0
From: Harrisonburg, VA
Thought I'd update the group on my swap. It's been done for a couple of weeks now. I'm still running the 4.6 computer though until the X3 arrives. It still feels better than the 4.6 though! The only thing that didn't mate up was the exhaust, so $220 later an exhaust shop reworked the final bends while keeping the cats in place.
Today, however, the truck has developed a grinding sound coming from the bellhousing. It's a scary sound to me. The fluid level is fine in the tranny and the transmission shifts fine. There's no vibration or anything out of the ordinary except for the grind. It comes as goes, but appears to get worse the longer I drive (I assume related to the heat of the converter).
It's a shot in the dark but I thought I'd see if anyone had any ideas. I'm going to start investigating tomorrow, but in 30 degree temps the more efficiently I Can diagnose a problem the better!
Thanks in advance!
Peter
Today, however, the truck has developed a grinding sound coming from the bellhousing. It's a scary sound to me. The fluid level is fine in the tranny and the transmission shifts fine. There's no vibration or anything out of the ordinary except for the grind. It comes as goes, but appears to get worse the longer I drive (I assume related to the heat of the converter).
It's a shot in the dark but I thought I'd see if anyone had any ideas. I'm going to start investigating tomorrow, but in 30 degree temps the more efficiently I Can diagnose a problem the better!
Thanks in advance!
Peter
Senior User
Joined: Dec 2008
Posts: 237
Likes: 0
From: hazleton pa
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Brett Foote
Senior User
Joined: Dec 2008
Posts: 237
Likes: 0
From: hazleton pa
Update!!
ok well this has been along time i had given up hope in feb and after i removed the 4.6 i towed 2 a shop 4 the conversion.. they did nothing up 2 last week. so i got a 4.6 romeo block n heads ... i am going 2 do a head gasket on it since its allready bare anything i should know while i have it apart to look for any tricks with timing .. guess ill be doing this build from the bottom up... thnx 4 the help guys 
Elder User
Joined: Dec 2007
Posts: 842
Likes: 0
From: royal oak, mich
When we got a prototype 4.6L in at McCord gasket all we had was a parts beak down. We figured out to put it one TDC #1 then take colored paint pens and mark the links to the teeth of the drive gears. We used what tools we had on hand to position the cams. What I'm trying to say is that it's not brain surgery but the timing is of the utmost. The other shift got off by one tooth or so and bent all the valves. We had the engines apart on several occasions to change head gaskets. You can get the tensioners down to where they make putting it back together ez. You just have to fiddle with them and then put in a pin to hold them. Pull the pin when all is together and the oil pressure will set them. Can't get the rod caps mixed up. Get a factory assembly manual from Helm and it will tell you all you need to know.
Senior User
Joined: Dec 2008
Posts: 237
Likes: 0
From: hazleton pa
When we got a prototype 4.6L in at McCord gasket all we had was a parts beak down. We figured out to put it one TDC #1 then take colored paint pens and mark the links to the teeth of the drive gears. We used what tools we had on hand to position the cams. What I'm trying to say is that it's not brain surgery but the timing is of the utmost. The other shift got off by one tooth or so and bent all the valves. We had the engines apart on several occasions to change head gaskets. You can get the tensioners down to where they make putting it back together ez. You just have to fiddle with them and then put in a pin to hold them. Pull the pin when all is together and the oil pressure will set them. Can't get the rod caps mixed up. Get a factory assembly manual from Helm and it will tell you all you need to know.
thnx .. are the head bolts stretch or can i re use them.. if i have 2 buy new how much u figure they cost
Elder User
Joined: Dec 2007
Posts: 842
Likes: 0
From: royal oak, mich
They are the TTY(torque to yeild) type. Use once and throw away. Most of the fasteners are. We were lucky to see exactly what loads were incurred. We had an ultrasonic bolt tension readout and a special paper to see what was going on when things got torqued down. When I do mine I intend on using studs.