| ||
Visit MustangSteve's web site to view some of my work and find details for: FYIFORD Contributors' PICTURES - Power Brake Retrofit Kits for 65-66 Stangs - Classic Mustang FAQ's by MustangSteve - How to wire in a Duraspark Ignition - Mustang Ride Height Pictures and Descriptions - Steel Bushings to fit Granada Spindles to Mustang Tie Rods - Visit my EBAY store MustangSteve Performance - How to Install Granada Disc Brakes MustangSteve's Disc Brake Swap Page - FYIFORD Acronyms for guide to all the acronyms used on this page - FYIFORD Important information and upcoming events |
FYI Ford, Classic Mustang Tech Discussion » 9" rebuild » 7/13/2025 5:30 AM |
See if the bearings have a name on them in the install kit. If they aren't Koyo, Timken, SKF, or another brand I recognize I wouldn't use them.
There are very few companies that actually make gears, so if its a small company my guess is the gears are made in China and they stamp the company's name on them. The equipment to make and lap gears is pretty expensive, so doubtful a small local company would have it.
Honestly the diff would put me off too. The biggest issue with stuff from China is the metallurgy is often suspect. I'd probably just toss the whole setup on eBay and let someone else take the risk.
FYI Ford, Classic Mustang Tech Discussion » 9" rebuild » 7/12/2025 10:47 AM |
I've never put much faith in using the pinion depth tool, etc. Maybe in a factory setting that works, but every rear I've ever set up I ended up doing by good old trail and error starting with the factory pinion shim, checking the pattern, and making adjustments as needed. I own a really nice (and expensive) pinion depth tool, but after trying to use it twice I came to the conclusion I wasted more time monkeying with it than I did changing shims and running patterns. The tool didn't generate the right shim for a good pattern either time, so I simply stopped using it. I just make setup bearings so its easier to change shims, but on an 8" or 9" its even easier, because you don't even have to touch a bearing to change the shim, and there aren't shims to set backlash.
I would never advise opening the BL up more than max spec. On a car that will see highway use leaning toward the wider side is advisable, because the heat of use will shrink it somewhat. In a drag only application I'd go the other way to reduce windup shock from a hard launch.
FYI Ford, Classic Mustang Tech Discussion » Electric fan learning curve » 7/08/2025 5:13 AM |
It could also be the water pump. If your radiator is aluminum, which I believe the Champion ones are, 2 rows of 1" tubes is pretty much standard. They typically don't use 3 rows of tubes, because aluminum is much better at rejecting heat that copper/brass.
A water pump with the wrong pulley ratio, or one that's very high volume that moves the coolant through the system too fast, can cause the coolant not to be in contact with the block, heads, etc. long enough for optimal heat transfer. I did some experimentation with my geothermal heat pumps and found that unregulated the "dumb" systems (ones that have no internal flow control) would run so much water if not chocked down that the outgoing temp was well below the spec'd temp delta (incoming temp vs. outgoing temp), which is supposed to be 20-25 degrees rise in cooling. I was seeing more like 15-17 degrees. By partially closing a ball vale in the return side and reducing flow down to 1.5 gpm/ton, or closer to that spec, my outgoing temp went up to 22 degrees and the systems cooled better and ran less. Unregulated I could see 8-9gpm on the 3 ton unit, which I cut down to 5.5-6 gpm. Fairly minor change, but significant difference in system performance.
IMO a stock engine shouldn't need a high volume water pump, much like a high volume oil pump. These changes are unnecessary and fall into the "bigger MUST be better" camp of engine building. What you may have done by adding another fan is decrease the temperature of the air around the core, or at least increase it ability for the heat to be carried away. Consider that heat transfer in a given time period is greatest when the difference in temperature between the two mediums is greatest.
You could test this if you could change the water pump pulley size. Increase the size and spin the pump slower and see what effect it has on the temperature both with and without the new fan running. Reducing the size of the crank pulley would also work,
FYI Ford, Classic Mustang Tech Discussion » 9" rebuild » 7/08/2025 4:53 AM |
I would verify the whine myself. If you had a good pattern (pattern I see in the pics looks good), and proper backlash I can't see how they could whine on acceleration. The only other thing I could think to check would be runout of the carrier (ring gear mounting surface). Some gears are inherently noisy on the coast side, but I've never heard gear whine on the drive side. I'd wonder is there was a whine from something else that he is just now hearing because there was a change made to the car. Does the car have an auto or manual trans?
FYI Ford, Classic Mustang Tech Discussion » Electric fan learning curve » 7/07/2025 4:24 AM |
I wouldn't worry about the engine temperature exceeding 195 degrees. The engine will actually last longer running hotter, as well as making more power, and getting better fuel economy. I'd be more concerned that the temperature doesn't creep up from the set point and get to a point where I would consider it to be too hot (which would be about 220-230 degrees). With a good set of fans I find that decidedly unlikely.
FYI Ford, Classic Mustang Tech Discussion » 9" rebuild » 7/07/2025 4:19 AM |
RTM wrote:
He said it has a whine on acceleration. Which in theory could be the pinion being to deep. He's thinking he ordered his axle shafts to long.
I could not center the drive and coast side without going deeper with the pinion. I tried to move the back lash from .007-.010 on every shim thickness I tried. Ugh
A couple thoughts:
First, not sure how he's hearing a whine on acceleration. I'm not sure I've ever heard a rearend make noise on acceleration. I've heard them absolutely howl when coasting. Typically on acceleration there's too much other noise going on.
Second, what gears did you use? Were they used? Because when setting up used gears what I've always followed is to essentially completely ignore the drive side. Additionally, you may get a goofy pattern where its centered root to tip, but not heel to toe, and the pattern may run off the edge of the gear on the heel on one side and the toe on the other. That's fine for used gears. All that's really important for quiet operation of a used gear set is that the pattern is centered root to tip on the coast side.
FYI Ford, Classic Mustang Tech Discussion » Electric fan learning curve » 7/06/2025 11:33 AM |
In most OEM applications they don't turn the fan at at the t-stat opening temp. Typically the fans are delayed until the coolant temp is more like 210-220 degrees. So long as the engine doesn't overheat, which at typically system pressure of say 13-15psi wouldn't be until like 240-250 degrees, a hotter running engine is inherently more efficient. I think the OEMs do it that way to increase efficiency/reduce emissions.
If you are maintaining engine temp of 195 I see nothing wrong with it. I have mine (single fan) set to come on at 200. I drove the car once when it was 100 degree outside with a heat index closer to 110 just to see what would happen, and it never got above 215, even sitting idling in traffic.
FYI Ford, Classic Mustang Tech Discussion » 9" rebuild » 7/06/2025 5:51 AM |
As long as it doesn't use Richmond gears it probably won't whine.
These guys are still making repro Ford metal tags:
FYI Ford, Classic Mustang Tech Discussion » Possible 351C Boss engine find » 7/01/2025 9:29 PM |
BobE wrote:
True, true, true! And if you try to explain, you only get a dropped jaw, or a blank stare, or maybe the start of an argument. I've taken to mostly just nodding my head.
Yeah, you can't upset their apple cart with facts. You can't fix stupid. Trust me, I've tried.
FYI Ford, Classic Mustang Tech Discussion » Possible 351C Boss engine find » 7/01/2025 5:01 AM |
Greg B wrote:
6sally6 wrote:
Funny how 'every 'SBF' is a Boss 302
'ever 'SBC' is a 327 Corvette engine..... to guys that have-no-clue.
6sally6
And don't forget every small block Ford with a 4 barrel manifold sitting in a Mustang is a 289 HiPo
Every FE engine is a 427 side oiler, every BBC is an LS6, every Chrysler B series is a 440, and the list goes on, and on and on.
FYI Ford, Classic Mustang Tech Discussion » falcon vs mustang, and gtp40 spark plug » 6/29/2025 7:43 AM |
The GT40P heads have raised exhaust ports compared to typical E7TE heads, and other older offerings. When people started putting them on 5.0s in Fox cars there were special headers made for P heads so that the rest of the factory exhaust stuff would bolt up. I therefore think your concern is valid.
FYI Ford, Classic Mustang Tech Discussion » falcon vs mustang, and gtp40 spark plug » 6/28/2025 5:45 AM |
Casting numbers would give you a year and some other information. Look above the oil pan rails and near the starter location.
FYI Ford, Classic Mustang Tech Discussion » Possible 351C Boss engine find » 6/27/2025 6:57 PM |
Bullet Bob wrote:
In 1964 I bought a 1935 Pontiac with 52K original miles from the original owner. I had heard about the car from someone and kicked around driving into the bowels of Los Angeles to check it out. Finally I decided to follow it up and a friend and I went.
I bought the car for $40 and got a set of "56 Calif. license plates still in the envelope with the paper between the two plates and a box of spare parts that the owner had bought at the start of WWII because she knew parts would be hard to get....just in case. Drove that car for about two years. Great car. Still wish I had kept it.
You just never know.
BUT, at least you have that story, even if the car is now gone. I'm betting we all have a bunch of those stories about great quests for cars or parts, and the people we met along the way.
FYI Ford, Classic Mustang Tech Discussion » Possible 351C Boss engine find » 6/26/2025 4:38 PM |
Well that's a shame, but at times like this I'm reminded that the real enjoyment comes from the hunt and often the purchase is actually disappointing. Things tend to work out as they should. Glad you didn't make a special trip for it.
FYI Ford, Classic Mustang Tech Discussion » Possible 351C Boss engine find » 6/24/2025 3:48 PM |
Good luck!
FYI Ford, Classic Mustang Tech Discussion » GM L83 LT Heads on a 5.0L 302 Ford Small-Block? » 6/22/2025 5:26 PM |
It just one of those projects being done to show what a shop can do. The amount of work required isn't even close to the modest gains you might see over a set of AFRs. Frankly for that kind of money just bolt a blower to it and then the head flow really doesn't matter anymore.
FYI Ford, Classic Mustang Tech Discussion » 74 -75-76 Mustang II's...... » 6/20/2025 6:08 AM |
I have never been a fan either, but those cars ultimately kept Ford from killing the model. Had the Mustang II not been somewhat successful what happens in '79? Does Ford revive the Mustang after some years of not producing one? Does it even end up on the Fox platform? There are so many ways this could have gone horribly, horribly wrong for the brand. The Mustang II kept it alive until better days dawned once again. I'll respect it for that if nothing else. You can't really pick at the performance either; it was dead basically everywhere at that time.
FYI Ford, Classic Mustang Tech Discussion » 74 -75-76 Mustang II's...... » 6/18/2025 6:33 PM |
There's one on a trailer tucked in somebody's yard I drove past yesterday. It looks like its been there for a decade or more.
'74-'78 were dark times in terms of factory performance. V8s making less HP than a typical non-turbo 4 cylinder economy car now. IIRC the only year the Camaro outsold the Mustang was '77. Typically the Mustang outsold the Camaro, Firebird, and Corvette combined.
But, as usual the combination of a light car and a big HP engine makes for a lot of fun.
FYI Ford, Classic Mustang Tech Discussion » Lug Wrench....someone posted a while back » 6/18/2025 6:20 PM |
When in doubt just make one as suggested. I have a bunch of thin wall sockets I made with a bench grinder.
FYI Ford, Classic Mustang Tech Discussion » i am back again - this time with more projects! :) » 6/18/2025 6:19 PM |
On the street 400HP and a T5 in good shape will be just fine, so long as you don't powershift 3rd. In a light car like an early Mustang the tires will break loose in 1st and 2nd long before you shock load the trans enough to break it. 3rd you might have enough traction though. I've replaced A LOT of 3rd gears in T5s over the years.
FYI Ford, Classic Mustang Tech Discussion » i am back again - this time with more projects! :) » 6/17/2025 2:30 PM |
Glad to hear your back to working on projects again.
FYI Ford, Classic Mustang Tech Discussion » Car show here yesterday » 6/15/2025 6:13 AM |
MS wrote:
Cool to see! Not ONE new Corvette!!! I like it!
There aren't any new Corvettes. They stopped building the Corvette in 2019. Now they are building an attempt at an American exotic which stole the front end from a Ferrari 360 Modena. The car is ugly and spits in the face of Zora Arkus Duntov's dream.
FYI Ford, Classic Mustang Tech Discussion » Anyone ran across some good deals on tire buying lately? » 6/12/2025 5:03 AM |
Even if you don't buy from Tire Rack, the one extremely helpful thing on their website is the reviews. Without reviews you are taking a shot in the dark unless you have first hand experience or know someone who has it with a tire you are considering buying. I've used this several times to help make selections. I don't mind paying $20 more per tire for a set of tires that will last 50%-100% longer on my DDs for example. On my fun vehicles its more about performance, because they just don't see enough miles to wear out.
FYI Ford, Classic Mustang Tech Discussion » Anyone ran across some good deals on tire buying lately? » 6/10/2025 5:07 AM |
I used Discount Tire to mount and balance tires for my FJ Cruiser a while back. I bought the tires on Tire Rack. IIRC I could have bought the tires there for about the same price as Tire Rack, but wouldn't have had to go through the rigamarole of picking them up. Also, they were open on a Sunday. Balancing job seems to have been done well. The new tires are much better than the old ones, but they were an overly aggressive mud tire the previous owner had installed and were also worn out.
FYI Ford, Classic Mustang Tech Discussion » Anyone ran across some good deals on tire buying lately? » 6/09/2025 10:16 AM |
I've bough exclusively from Tire Rack for years now. I can pick them up at the local depot to avoid shipping cost. Its worth seeing where the local depot is for you, because so long as you can transport them you can save $50-$60 on a set of tires by avoiding the shipping cost.
I would advise avoiding the on site tire mounting and balancing places (the ones that come to you). I had an extremely bad experience with one, and won't use them again. I found a local shop I use to mount and balance and have been very happy with their work, turnaround time, and cost has been reasonable.
Another way you can save a bit is if you live near a dump. You can take the old tires there yourself instead of paying for the disposal fee. The disposal fee is around $10/tire around here. I've never been charged more than $3 for disposal of a whole set of tires at the dump. Not worth making a special trip, but I'm at the dump frequently for work, so not a big deal to just take a worn out set of tires if I'm already going.
REMEMBER!!! When posting a question about your Mustang or other Ford on this forum, BE SURE to tell us what it is, what year, engine, etc so we have enough information to go on. |