Superformance MKII, Riverside Racer 289 FIA vintage race car - Page 4

1795 · #1 (**permalink**) 02-16-2017, 02:04 PM

Ross,

Saving some money and putting on the roundels and numbers when it gets home. Already have them here. It will be #10, my first son's birthday. May even look at adding a transverse stripe in white as well.

cobrakiwi · #2 (**permalink**) 02-16-2017, 03:06 PM

Nice,
passing the paint milestone definitely gets the enthusiasm peaked

Congrats

byronpete21 · #3 (**permalink**) 02-16-2017, 04:23 PM

Congrats on the paint job. The red looks amazing.

Buzz · #4 (**permalink**) 02-16-2017, 04:29 PM

Congrats - looks great! Really looking forward to seeing this car when it's done!

1795 · #5 (**permalink**) 02-16-2017, 04:30 PM

Yes, it finally makes me feel like I have a car coming. Until now, it has just been a bunch of parts sitting around the house and garage. They did a real nice paint job. Thanks for all the support.

Morris · #6 (**permalink**) 02-25-2017, 12:40 PM

Jim

The opening you are using..... is for the return cooled oil coming from the cooler.... on that rear end cover.

That is a bad place to try to vent from.... if you look closely it is directly in line with the spinning differential where all of the splash is coming from.... If you look at the photo I just posted, it shows the inside of the cover and is just off of the Ring Gear and to low for a vent hole. Also remember as you go around turns and are pulling X-amount of G's... the oil is trying to get our the sides as well.

So you need to plug that hole. Then go to the top hole on the cover and do the work we did on the inside of our diff to prevent the oil from pushing out of the rear end.... the oil will sling into the vent hole and then keep pushing oil up to the catch can.... and eventually deplete all of the oil in the Rear End by continued forcing of the oil into the vent hole.

That is why we have a cover over the hole with a fence below it so that the oil coming off of the Differential doesn't get to the vent hole. the large plate keeps the oil from the Ring Gear from getting to the vent hole.

Also only use AN fitting with Stainless braided lines.... you can't get a worm clamp to remain tight on a hose barb made for a rubber hose. especially situations where there is a lot of oil.

Morris · #7 (**permalink**) 02-25-2017, 12:51 PM

PS

If you look at the large fence that goes within 1/8" of the differential .... it's not very far from the vent hole .... also the Jag cover in my photo show's a small fence around the vent hole ...but that is not enough shielding of the vent hole to go on a race track.

And you can say that oil can drain back in the the rear end from the catch can.... but it should never get there in the first place.... if it does ... you will run the diff dry or low on oil and severely damage the bearings and seals.

The oil needs to stay in the rear end and lubricate the componets even when you are thrashing around a race track.

I'm just saying....

1795 · #8 (**permalink**) 02-25-2017, 01:28 PM

Morris,

Ok, thought that it looked like a large hole for a vent. There is a small hole that has a plastic plug in it directly over the differential oil fill hole towards the top of the cover, I imagine that is where the vent is supposed to be. Not sure why it is plugged. I do not see any other openings on the differential cover.

I can easily make another cover to block that return hole for the differential cooler, or decide to plumb in a differential cooler. Not sure that I will need one as I do not plan on running any endurance races right now.

the weather has turned cold again, so I will wait until it gets warmer before taking the rear cover off and seeing what is there. Will take your advice concerning how the hose that runs to the catch can is connected.

Thanks for the advice, greatly appreciated.

Jim

1795 · #9 (**permalink**) 02-27-2017, 12:31 PM

Morris,

Attached are some photos of the back cover, it is a little different on the inside than yours. Ross was planning on welding the rear cover similar to what you have done. Given the inside of this back cover, what do you think?

There is a vent tube that comes down at a right angle and has oil deflectors to the side and below it. Not sure if this vent will require further modifications? Your thoughts?

What would you add?

New gears and LSD.

Thanks.

Jim

1795 · #10 (**permalink**) 02-27-2017, 12:33 PM

Things are moving along. New photos from the factory

As I write these photos are probably obsolete and a lot more has been accomplished. Starting to really get the itch. Went to an indoor go-kart track this weekend and started honing my skills.

Jim

Morris · #11 (**permalink**) 02-27-2017, 01:21 PM

That cover is the same as the Jag cover I've been showing you.... that small tube that is the vent in the photo is upside down...... meaning the cover is upside down ....

The bad thing about that vent tube is there is no way to attach a braided line to the cover.... and it's probably rubber or plastic and will deteriorate in due time, no that won't work for a race track.... especially when you oil gets up to 300*plus degrees.... you need to do a 1/4" NPT the hole and attach a plug in that hole and then drill a hole in the top of the rear end where you have less chance of getting oil in the vent line.

In this photo you can see how we drilled a hole in the top of the housing and put in a 90*degree nipple then put a fuel filter in line with the line going to the catch can. we also have the mods to the inside of the rear cover.... doesn't matter if it's steel or aluminum... that vent hole has to have the cover and fences to prevent oil from getting into the line.

If you are going to do it.... do it Right and then you don't have to be concerned about it later ..... like at a track ...

Morris · #12 (**permalink**) 02-27-2017, 01:24 PM

While you are drilling and tapping holes in the case.... you might as well drill and tap a hole in the bottom of the case so you can drain the oil out of the diff at some later date....or plumb it for a cooler and pump.

That's a 3/8" NPT hole and tap.

1795 · #13 (**permalink**) 02-27-2017, 01:59 PM

Morris,

Ok, that helps. I understand what your have done a little better now. I was not aware that your cover had a similar vent tube coming down. Ross was suggesting that we may want to plug the oil return hole and move it forward, like you have done. We will plug both holes on the back cover. I like your idea of coming out of the top of the differential, as I was wonder how that vent would effectively release pressure being that the end of the tube was so far down from the top.

There already is a drain plug on the bottom of the differential and Ross and I have talked about using that to go to the cooler if we decided to go that route. We would install a tee fitting and have one go to the cooler and the other plugged for draining fluid.

Thanks for your suggestions, it has helped a lot. Just wanted to check back before we started to make adjustments and make sure that we were on the same page and why.

Jim

Morris · #14 (**permalink**) 02-27-2017, 06:48 PM

Jim

I think you might be better off just replacing the rear cover with a steel cover if you are going to put the vent and return fitting on the top of the rear end.....just saying...

1795 · #15 (**permalink**) 02-28-2017, 04:38 AM

Morris,

I will take that under consideration and run it by my crew. Quickly learning a lot about the internal working of differentials.

Reading up a lot on roll centers and center of gravity and how to adjust those for optimum performance. It will be a little similar to what I have suspension wise to the MGB, with the transverse leaf springs, but somewhat different as well and different than adjusting ride height with a coil over system.

A lot to think about and plan for in a few short months.

Jim

1795 · #16 (**permalink**) 02-28-2017, 08:44 AM

Morris,

Looks like we will be going with the steel cover. Thanks.

Jim

1795 · #17 (**permalink**) 03-02-2017, 10:27 AM

It's getting a little closer to done at the factory. Here is the latest picture. Should be completed by early next week and then loaded onto the freighter for it's trip home.

The next pictures should be of the completed roller, minus wheels.

Jim

Bill D · #18 (**permalink**) 03-02-2017, 10:51 AM

Gorgeous! Simply gorgeous!!

1795 · #19 (**permalink**) 03-02-2017, 11:01 AM

Thanks Bill. Cannot wait to see it in person. should be arriving at Olthoff Racing in mid-April and I will be picking it up and bringing it home after Dennis mounts the race tires on the wheels so that I can transport it. Will pick his brain while I am there for suggestions for race setup. Then back to update NY with a stop by Time Machines where Ross, Rick and Roy will be helping me install the differential and then back home for the rest of the install and modifications to get her ready to race.

I should have one last photo of the completed car before it gets shipped that I will post and place under my pillow until it gets home

Jim

1795 · #20 (**permalink**) 03-06-2017, 02:23 PM

Well, Ross did an excellent job on the rear cover. We were going to go with the steel cover, and Ross had one in hand, but he suggested that we should try to use the alloy one as it would help with keeping the temperature down with the differential oil, due to the cooling fins and composition of the cover. I concurred with Ross, as we will not be running an oil cooler on the differential at this time.

Ross was able to make the adjustments and welded in deflectors and tapped the holes on the rear cover for plugs. He also added a tee at the top of the differential in case we added an oil cooler at a later date. For now the tee will be plugged. Still have to do some final filing and fitting, but it is a definite improvement over the stock one.

Thank you everyone for your input. I am anticipating receiving some final photos of the car before it is loaded n the shipping container shortly.