C5 Corvette Wheel Hop Fixes (HPI Diff Mount Install & Review)
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- Опубликовано: 2 окт 2024
- All C5 Corvettes suffer from wheel hop - especially while aggressively accelerating. This is mainly caused by GM's engineers having to strike a balance between the large number of people that just cruise in their C5 Corvettes and another large group that are mainly interested in the C5's performance at that track and the occasional twisty road or on ramp. In this video I walk through some of the causes of C5 Corvette Wheel Hop and do a complete installation and review of the HP Injectors transaxle diff mount. Come along as we fight together against C5 Corvette Wheel Hop! Note. On the C5 corvette the diff is connected to the transmission so it is actually called a C5 Corvette Transaxle Mount!
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HPInjectors Transaxle Mount/Brace: https:amzn.to/3SYb3KF
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Авто/Мото
Great video as usual! What a great upgrade!
Thank you Sir - I appreciate the complement!!
Great video! I have an automatic and don’t see a lot of wheel hop, but I am always looking for simple bolt on upgrades. Replacing my sway bar bushings was a big improvement. Need to replace my shocks now that the C5 is just under 100k miles. I can see this as a good drive shaft and transmission stabilizer. Thanks for bringing this to our attention!
Glad you liked the video - absolutely makes the car and drivetrain feel more connected! Thanks for the comment!
Thanks for your videos. I think you are the best.
I installed my HPI brace. I don’t have a lift so Jack stands it was. It was harder than I thought. Note. The lower bolts need a deep well socket which I had to go get.
The vibration damper was hard to get to but I got it. The rest wasn’t too bad.
Final thoughts. I agree with your assessment. There is a little more Noise & vibration but some of it is cool too.
Now for that burn out!!! Well, I’m still getting a lot of hop but it is better by about 50%
Where do you think the rest of your real hot is coming from, a arm bushings?
@@Toys4Life
I’m guessing all the bushings etc are old and moving too much.
I think that's probably the next likely step if trying to eliminate any hop/shake. Also, different temperatures and different road surfaces for me anyways influence if I get any vibration shakes/hop or not.
Didn’t know about this I just bought my c5 a month ago but I know what’s on my list of parts thanks ;)
Sweet!
I bought this kit after watching this video and it definitely eliminated 99% of the wheel hop but there is considerably more vibration over 2000 RPM. Be advised.
What transmission and gears do you have?
Same, just installed mine and for me above 3000 there is a good amount of vibration through the whole chassis, and going to try to remedy it some how
Same question as above. What transmission and gears do you have? I have the M6 with 3.42s I don't think it's that bad. That having been said it is subjective of course.
If you want race car performance, you are gonna have race car problems.
I raced my C8 and got wheel hop bad. Thought maybe because it has run flat tires that come with the Z51 option. Seems to be fine on the street with cooler roads but on the strip its way to sticky.
Great video! With newer technology, its nice to see these aftermarket parts improve the cars with proven results we can see for ourselves. Which you have showed.
Now call some more places and see who will sponsor the next video lol 👍
Thank you! Appreciate your taking the time to write a detailed comment Sir!
I just installed one of those HPI Differential Mounts on my LSX454 C5 Z06
LINK to pics... www.corvetteforum.com/forums/c5-forced-induction-nitrous/4415147-ragin-racing-c5-z06-build-lsx454-swap-a-and-a-supercharger-pic-s.html
* I love your videos and watched every single one on the A&A install MULTIPLE times !!!!!
Thanks for the note - much appreciated! I looked thru your thread and wow - impressive build. LSX 454 with SC to boot - very nice. Time for the C6 M6 Drivetrain?
Independent rear suspension ever since back in the day snapping half shafts
Or tearing the diff away from the transmission. Whenever I get hop at the track I try to lift immediately. I should get a trans brace!
Thanks for convincing me to order one. And THANKS for the discount code! Just ordered one and saved $45.
Sweet, be sure to report back after you get a chance to test it out thoroughly!
You bet, I’m going to the strip on Thursday, 4/29 so I’ll be sure to do that.
Cant wait to install my diff mount from AMTmotorsport! Im sick of wheel hops
Yeah, that hop/shake tears stuff up and just sucks!
Great thorough write up! I put 3.90s in my C5 last September, and when I had it apart I ordered an HPI Mount. I ran into a few issues attempting to install, and since wheel hop hasn't been too severe I set it aside. 1) The tip that you gave for drilling the holes larger should solve my inability to mount it to the differential. 2) The countersunk pockets for the bolt heads that mount it to the diff are too deep, as when they are fully seated there is not enough room in the pockets for a socket nor enough of the bolt head protruding to use a wrench. 3) When mating the assembled brace to the subframe, the rubber stoppers come in contact MUCH before the mating plate with the two studs in it. Did you just draw tight and it is not supposed to completely come in contact at the subframe?
Sorry for the late response - did you get back around to completing your install? I might have added washers under those bolts (maybe I grabbed some slightly longer ones out of the bin too - to get a wrench on them. It has been a while so I am not positive..
I really dont recommend 6061 T6 aluminum for anything that experiences high stress and fatigue over a long period of time. Its a material that is good in the right circumstances and has excellent strength to weoght ratio and is super machinable. But it has a pretty short fatigue life. This mount is almost CERTAIN to break in 10 years. A steel one will literally last forever. Its has unlimited fatigue life.
I hear what you're saying, if you nudge past the aluminum alloys design specs, it will fail very quickly. Otherwise look at airlines that fly day in and day out with tons of stress, tons of aluminum! If it's designed properly, it will last.
wow that video you took of the mount on your differential was very eye-opening and I got to thinking of the one on my C5
I though the same when I first watched it!
Exactly what made me order mine
Thanks for the discount Toys4Life, I just ordered mine and the discount was still valid. Hoping this helps with wheelhop as I already have fresh C6Z shocks, poly control arm and sway bar bushings, and fresh alignment. Still getting wheelhop sometimes. Only rubber left is the motor mounts so if this doesn't fix it then I guess I'll go there... Please advise anything else you have done since posting the video that might have helped!
I am 100% convinced it helps a lot! Just look at the deflection the stock mushy rubber has in the video clip during the soft launch I did in my driveway. I have not done anything else since but in the back of my mind I feel like the rear A arm bushings are probably deflecting a little as mine are stock 20 year old rubber. So far it is so much improved I have not replaced them - IMO poly is kind of a pain so I am holding off as long as I can. Report back after you have a couple of weeks of summer driving if you would! Good Luck!
@@Toys4Life will do. Do you have Facebook I could message you on there. I did the poly bushings on Upper & Lower front & back and replaced every single ball joint. It was a ton of work. So I was disappointed when it still hops sometimes! Your video made me realize this is a significant issue I have not corrected yet.
Sir thanks for the tutorial. Made my install go smooth. I also agree with your results. Worth the $ and effort.
Great to hear!
I just put in your discount code and it still works. Thank you so much, that saved me $56.
Excellent video. Thank you!
Glad it was helpful!
The cradle bushings need to be soild but your ride in the road will suck
Cradle bushings?
Great vid, subbed
I just ordered one using the discount code! Thank you
That is awesome! Enjoy!
I took your advice and ordered this parts. Phenomenal performance upgrade. My question is, did you experience any rear end whine after install?
A little bit, but well worth the trade-off of much less drivetrain movement. Keep in mind I have a six-speed manual if you have an auto it would be different.
I did full poly bushing suspension, c6z06 shocks and mickey Thompson’s
Nice - what poly bushings did you use?
@@Toys4Life energy suspension and I bought new metal sleeves. Tried to use the factory ones but the rubber was like welded to the metal I couldn’t get them separated
Would you use them again if you're doing it today?
@@Toys4Life absolutely. After I did the full poly suspension the car felt like it was on rails . Never heard one squeak. It was the best mod I did as a c5 owner hands down.
@@wkeil1981 Nice!
I installed this about a month ago. Also supercharged with a PD supercharger. Honestly I can not see any difference in wheel hop. Mine is hopping on hard excel just as much with stock mount. Im running 305's in back with 600whp. What I do notice is more noise and vibration and what sounds like a exhaust drone in 6th gear when cruising. I have stock ZO6 TI mufflers. For me it is coming off. No benefit for the money.
Appreciate the comment. Couple of thoughts. No doubt - C5 Hop/Shake sucks. Are you planning to live with the hop/shake? You know there is quite a bit of movement in the stock rear mount vs HPI it is a fact - I even provided the footage. Unless our plan is to "live with it" I would do the rear A arms next (before removing the diff mount) to see if that solves the issue for you. If A-Arm bushings do solve your issue, you can put the stock rear mount back in and if the your hop/shake stays gone you are good. Also, road and tire temps greatly affect the friction between the tire & road. At least for me, in early spring and late fall, my ultra high performance tires don't work so great. Not sure what the temps are where you live. Don't give up until you fix your issue!!! Good luck and report back what you do.
@@Toys4Life People are always mentioning road and tire temps, and I experience the same increased incidence of wheel hop in those temps, but ultimately we should be able to fry the tires on demand (regardless of ambient temp) in a car like this without saying a hail Mary for the diff/trans. Also, what about people with older tires that just want to have some fun with them before dismounting them. What about people who live in a colder area where most driving happens around 50's and 60's. The amount of wheel hop is just unacceptable. I'm in the same boat as @Brian Bouchard. I've had a similar mount for a few years (not from HPI) along with poly motor mounts, and wheel hop was unchanged. I did recently find that one of the rear toe links had an inner end with play. I wonder how much of that is cause vs. effect of the wheel hop. Replacing it did reduce the hop noticeably, but did not eliminate it. Presumably, this is what it was like before the toe links went bad. I'm going with the LG motorsports monoball bearings in the rear control arms next. Keep up the videos if you hunt down the hop some more!
I notice little more vibration around 2000-3000rpm. Maybe because I have very hard driveshaft couplers. I dont know. I was thinking should I put back that balancer ball.
I'm sure that harmonic dampener would make a difference. I thought about it too, but it would take some engineering to mount it a little bit differently.
@@Toys4Life I installed new ATI super damper three month ago.
I wonder if this will also help the C6?
C6 has different mounts. I think they went to two of them, which tells me that maybe they were trying to fix the problem?
@@Toys4Life My car gets violent wheel hop from 1st gear pulls! I hope the solid motors mounts help with it! Also great vids keep em coming.
I can't wait until Spring gets here to install mine. Thank you for the discount, much appreciation.
Appreciate the comment, you're going to like how it firms things up!
I installed one on my 98 when swapping in a 3.42 and Yank 3200. Much more solid feeling, with very little extra vibrations. But my bolt holes would not line up either. Simple fix for me on a milling machine, and I guess drilling them out is even easier, but something to consider. I'd recommend for sure.
Daaang. I need a milling machine too! Thanks for commenting - I went out for a late Dec ride yesterday afternoon and further concluded this mod is a no brainer!
@@Toys4Life I work in a machine shop, but I agree, we all need milling machines!
I just used the code it still works 3 years later. Paid 166$
SKIP TO 4:50
But then you would miss some of it? Just kidding...
Did you also have to disconnect the retainers holding the brake lines?
Yep, pop them off and unclip the wiring harness. You may have to slightly bend your lines and keep everything so it is not under the mount pads that touch the cradle. When done, zip tie everything nice and snug & out of the way. Good luck with your install!!
Can you please identify the torque setting for the center bolt.
A couple of things. I don't have a torque spec unfortunately but furthermore, it would be challenging to get a torque wrench on the nut side of the fastener. You could put a torque wrench on the bolt side, but that wouldn't be accurate. Therefore, what I did on my vehicle is use the lock washer and when I tighten it down with a combination wrench, I basically tighten it as tight as my arm would allow. Sorry that's not an exact answer, but it's what I did on my vehicle, and my 30 years of experience with vehicles tells me it will be sufficient to hold the fastener in place.
@@Toys4Life Got it! Did you use the supplied or original bolts? The video looks like the bolts you used were silver versus the supplied black ones.
Good eye. I elected to add another washer under each bolt to make it easier to tighten them down. To compensate for the washer I used a slightly longer bolt.
Great video👍. You installed yours before I could do mine 😂
Well in that case, hopefully my vid will make it easier for you to install yours. Thanks for the comment sir!
Another good video as I been enjoying your others as well. I'm currently a C3 owner and are am looking possibly getting into a C5, more than likely a Z06. Did you think about a Z06 when you bought your car?
I did. I like the looks of the regular body much better (subjective) so I never considered the Z06. Now it is at around 615 crank HP and is a blast for not a ton of cash.
@@Toys4Life I do understand, having T-tops on my C3 open motoring is nice. I do agree the hatchback are cheaper. Thanks for your response and I'll let you know which way I go. 6 speed either way is all I know.
@@larcelmer Good luck in your hunting!
I just bought a 2002 Corvette Lingenfelter supercharged 675 horsepower and believe it or not it's an automatic it is wicked fast
I believe it, that'll be fun as hell!
@@Toys4Life I can't find any information on it though I'm wondering if this is a rare car torch red outside black dash all red seats and carpet carbon fiber and Chrome on the engine I don't know if I've ever heard of one exactly like mine have you or anybody
@@Toys4Life plus I bought it with 30000 miles
Maybe it was a special install for someone brought the car to lingenfelter and gave him a check for 20 grand and this came out the door.?
That mounting scheme of Chevy is for the transaxle/motor to be able to flex in the chassis when cornering, especially, at high speeds.It looks like HPI took that into account with their design so handling should be just fine (maybe even improved).
Agreed! & Thank you for the comment!
Interesting. What would be the importance in allowing the driveline to flex while cornering? Does that keep the car more stable at high speed corners?
@@GreekGuru74it helps the irs grab the road better when it’s banked I think
Discount is awesome! It should be in soon. Thanks
Nice - let me know how the install turns out!!
Good stuff. I was going to get the Pfadt version, but not for near $600. I also noticed you have a Fiero as well. Have you done anything to yours?
Yes, it's got a GM 3800 series 2 supercharged engine in it that's Cammed and is on E85. It Runs 11.8 at 114 mph in the quarter.
@@Toys4Life I had a built Series III S/C in mine. Doing a LS swap now. Were you able to further isolate your “wheel hop” issue since you mentioned the HPI mount didn’t fully cure it?
It's manageable now, but if I wanted to go further I probably would go with stiffer upper and lower a arm bushings, I'm sure they're twisting around a little bit.
@@Toys4Life Just ordered mine today. Your discount code still works. Now the only thing I would have left to upgrade are the control arm bushings and axle shafts.
Just installed mine this evening. Timewise it took me a little over thirty minutes. I didn't have to worry about the damper since I've had an ECS trans brace on mine for 9 years now. I'll post the pictures up on Corvette Forum.
Thank you for the very informative video.
Glad it was helpful!
Great information! I’m sold.
Glad you liked it - you won't regret the upgrade!!
great video! thank you!
Glad you liked it!
Purchasing it now👍🏼
I think you'll like it, I'm satisfied while over a year later!
@@Toys4Life 👍🏼
really appreciated the detailed and informed approach to a situation that can in extreme situations, break the car. My first choice for problem correction would be the cornball power steering feel, where I understand not much can be done, except buy a completely different car
not tracking you on this one...
If you think our steering feel is cornball, wait till you drive a C7.. horrible!
+1
This product worked well this past summer - I must say!