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Hi folks, this is my second time doing a T5 Conversion on my cars (first was my 69 but did it allm t5 bell, ram clutch ect.)
the history of this 68 is:
-was restored 3yrs and converted to a 4sp Toploader by the previous owner.
-the shop that did the work is renown and likely the best around a 100km range.
-turns out they used a 3 finger diaphram for the clutch (which does baffle me cause the numbers matching 302 was modified nicely!!!!)
So my ISSUES:
-the adapter plate I bought was CNC billet but not by CPC or Modern Driveline, they ASSURED me on the geometry and guaranteed its fitment....Although it did sit and seat perfectly on the Bell Housing and Transmission during Dry fit, I COULD NOT use the top right threaded hole to fasten to the Bell and had to Butcher the bottom right hole to get it to line up (both left tapered bolts lined up perfectly...........
BIG ISSUE----------Transmission housing is Hitting the Floor??!!?? 2 points for sure (shifter housing being one and the other is somewhere along the top on those lumps and such)
Is there any way to LOWER the Motor or change its Tilt to get things to sit nicer? I had tried loosening both those Motor Mount Bolts that goes through the center holding the top and bottom section together with No Success.....
(just and FYI the trans mount was floating above the Crossmember as it was being installed......meaning the 4 that hold the tranny in place already determined the height.....its was around 1/4" above the crossmember
I Need some experienced insight here
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Are you using a T5 conversion crossmember ?
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Yes T5 conversion Crossmember.....
I guess I should have included this detail.....I had the rear of the trans supported by as Floor Jack as we were sliding it in place, this was VERY difficult due to it touching the floor, when it eventually went in, it was time to install the Crossmember...........it was floating above it by at least 1/4"
I need to know how to lower the engine, if possible.....do they make different size Motor Mounts? Is there Play or room for adjustments on the factory style ones?
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Is the angle of the fan/waterpump pulley parallel with the angle of the radiator?
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Yes, looks pretty good, but it is an aftermarket Aluminum Rad....
everything Looked great up until installing this T5 using the adapter plate......It HAD a 'RUG A' Toploader fully rebuilt which came from a Galaxie.....to my knowledge (but I did not inspect) it did not touch the floor.......
the only other possibility is when it was retored, they installed the Floors a 1/2" (or less) too low/incorrectly?? could that be possible?
either way, it needs to Drop, so Can Anyone simply Answer if this IS POSSIBLE using factory materials? (Mounts/Bolts/Cables/brackets whatever the heck is on it that determines engine height)
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Not factory, but maybe some adjustable mounts.
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M1Mustang69 wrote:
I need to know how to lower the engine, if possible.....do they make different size Motor Mounts? Is there Play or room for adjustments on the factory style ones?
The Ron Morris adjustable mounts are available in 1/2 inch drop. Because of the design of the engine crossmember, that'll be mighty close to hitting the oil pan.
If you only lower the motor, I'd be concerned with its angle corresponding to the rear end pinion angle.
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I can lower the Engine Crossmember with a solid spacer or washers, its the rest im worried about (the exhaust, the exhaust hitting the steering box, pinon angles ect...)
anyhow, those are super expensive, and im in Canada so A Lot More for me......looks like they have the proper "short" engine mounts too, so wither I drill my own holes through the frame, or use those Morris Adjustables?
anyone, any ideas how to lower the engine and trans?
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I wouldn't recommend it, but I lowered both my motor and trans by ~3/4", but it of course required several other mods. I did it to fit the shaker height to the hood, and thought it would be easier than milling the carb plate on the intake manifold. Nope.
Due to their cost, I made my own Ron Morris knock off mounts, and modified the trans mount to have a shorter rubber cushion. With the motor lower I had to move a header tube to clear steering linkage. Since the oil pan now interfered with the cross member, I made an engine cross member to clear the pan. The radiator fan no longer fit in the shroud and interfered with the lower radiator hose, so an electric fan was added. With the extra electrical load a bigger alternator was added. With the 7-1/2 qt oil pan hanging low out front, I built a skid pan to avoid disaster if it hit something. There may be other mods I had to do. It seemed like a good idea at the time.
Have you considered clearancing the tunnel where the trans hits?
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I have to think it's the adapter that's hosing something up. I converted my 66 from a toploader to a T-5 and had zero problems, although I used a newer bellhousing. I know of others that have used the original toploader bellhousing for the conversion and have had no issues.
Since you know the adapter was not correctly machined in at least a couple of places (you mention having to massage some holes to get the bolts in) and you said the manufacturer guarantees the fit, I'd go back to whomever made the adapter and present them with the issue. If nothing else ask for a refund and get an adapter from a reputable company that actually knows what they're doing (like Modern Driveline) and use that.
Last edited by John Ha (4/09/2020 12:40 PM)
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I agree.......whats crazy and doesnt make sense is about it being the adapter plate is the fact it Sat and Seated on the Trans perfectly, then also snapped into place on the Bell perfectly (holes aside).............I was under there this morning and its butted up tight and even.
the only way for the plate to cause this issue is if it were "wedge shaped" ......now I did not measure every surface, but by eye it was solid billet AL that looked true......
I wonder if the Floors were not installed correctly, as in 1/2-3/4" too low?????????
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The brace across the tunnel that the gear box crossmember bolts to, would dictate the height of the floor. Unless that was cut out, the floor should be in a similar place as original.
What do the angles look like if you pull the gearbox down to the crossmember?
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Sorry I dont follow the question.........Gearbox to the crossmember? my steering box?
the car was rebuilt entirely and Im assuming floors too which is why I was suggesting that.....everything looks incredible, but looks could be decieving....
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You sure you ain't got one of those Chevy t-5s?
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well, it drives and seated up......The Rebuld shop knew it was going into a Mustang........So am I CERTAIN, no, but ?????
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M1Mustang69 wrote:
(just and FYI the trans mount was floating above the Crossmember as it was being installed......meaning the 4 that hold the tranny in place already determined the height.....its was around 1/4" above the crossmember
So if I understand you the transmission will not sit on the transmission crossmember? If so and if you're using the same engine mounts as were used for the toploader, the only thing it can be is the transmission or the adapter. If it's a T-5 designed for a Ford it should fit.
Also, didn't you also say that a toploader was in it and that it was correct? In essence, the output shaft of both transmissions will be in almost the same place if all the mechanical parts used for the conversion are correct.
I still think it's the adapter. You said that they "guaranteed its fitment" so I still suggest working with the manufacturer to resolve at least the issue with the holes as well as the alignment. It's always possible that their engineering is wrong or that they sent you the wrong part, their machine had a hiccup or that they just plain don't have a clue what they are doing.
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The engine mounts are just about at the center of the mass of the engine, balancing the engine atop the mounts. There is some minor movement allowed in the engine mounts, but when the hoses and the exhaust are connected, the engine cannot move. Especially the exhaust. THAT will hold an engine in whatever position it was in when the exhaust was bolted up. Have you disconnected the exhaust system to allow the engine to drop into position?
There is no way a bellhousing or transmission can be honked up enough to hold the transmission up in the air higher than it belongs. Since the shaft going into the bellhousing and through the transmission enters and exits in a straight line, if something was OFF the shaft would not rotate.
All T5 crossmembers are not created equal. Some from ebay are junk and not made to any particular specification. Some, such as California Pony Car version, have mislocated holes and do not bolt up readily. The ones made by Glen Buzek and those sold by MustangSteve have some adjustability built in and will position the T5 so it just clears the tunnel.
I would advise against trying to lower the engine. There just is no reason to do so, and it can screw up hose position, fan shroud clearance and exhaust clearance.
It was never mentioned about your exhaust system, but I am reading between the lines enough to figure it is probably what is holding up your engine/tranny, and your progress. There is nothing else that could be holding the engine and tranny assembly in its levitated state.
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Some pictures of the offending areas would really help us see your problem.
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MS you nailed it!
I talked extensively to the Tranny Guy and hes been trying his best to help out via the phone......Last night he mentioned the exhaust, to which it is all Custom and well assembled.....it was not in the way for the install so I did not think to unbolt the long tube headers!
this morning I went back under the car, loosened the header-to-exhaust flange bolts, removed the Trans Mount Nuts, loosened the Crossmember and Motor Mounts............
I then started the car and gave it a couple shots of fuel to rock the drivetrain to wherever it wanted to go.....it was then seating on the crossmember.........so I removed it and had to remove some material on the mounting holes.....Looks like it dropped itself a good 1/8" - 3/16"......it is not touching the in those areas anymore....
fancy this though, as you said, I tightented the exhaust before the tranny mount and it raised it again slightly XD
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M1Mustang69 wrote:
Sorry I dont follow the question.........Gearbox to the crossmember? my steering box?
the car was rebuilt entirely and Im assuming floors too which is why I was suggesting that.....everything looks incredible, but looks could be decieving....
I'm sorry, i was assuming that the gearbox wouldn't sit on the crossmember.
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M1Mustang69 wrote:
MS you nailed it
👍🏻
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MS wrote:
The engine mounts are just about at the center of the mass of the engine, balancing the engine atop the mounts..............I would advise against trying to lower the engine. There just is no reason to do so, and it can screw up hose position, fan shroud clearance and exhaust clearance.
Any way To Change TILT Perhaps??? im investigating that the engine and trans are not sitting Level and somewhere on the line its causing stress on either the output shaft to the driveshaft or the cross member mount or or or.....Im working on figuring out a way to test this quantitatively, but that is also a challenge.....
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Just bolt it up and drive it.
The mind is a beautiful thing, but sometimes it can get in the way of progress.
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