Aluminum Flywheel with Mcleod Street Twin?

[ringmaster72]

I found a Street Twin for a good price, but it has the Aluminum flywheel. I have heard in the past, that aluminum flywheels make street driving more difficult. Does anybody have experience with the street twin with aluminum flywheel?

[HellTeeOne]

I think they're mainly a road racing thing. For a street/strip car like most of us have I'd go with the steel one.

[MEAN LT1]

I think they're mainly a road racing thing. For a street/strip car like most of us have I'd go with the steel one.

Agreed. I have the steel flywheel.

[firebird_1995]

If you decide to do it, the guy I just sold a bunch of parts for has a McLeod twin disc flywheel with a new surface for $150

[miller09]

i run a single disc clutch with an aluminum flywheel on my daily driver with no issues. so I am sure you will be fine running aluminum. I read all the same things you probably have about guys talking about how they are harder to drive ect ect. its all I had so I put it on and now realize how wrong those people are and yours will be heavier than mine with the twin disc. guessing most people that bash them have not used one. as far as being better for drag racing or even road racing I have no idea. just saying you won't have any trouble with it on the street if you know how to drive a stick.

[ringmaster72]

That is about where I am at. I twin disk with a aluminum flywheel will still weigh about as much as a stock setup. I just wanted to make sure nobody had a bad experience with a aluminum flywheel street twin.

[BALLSS]

OP

understand the twin has twice the friction surface as a single disc and does engage harder than a single disc...so with a "lighter" set up with AL FW it can bog faster than with a steel FW

you are on several forums asking the same ? and the majority opinion, especially from those who run the Twin, say go steel unless auto x is the primary use intent of the car

[ringmaster72]

There has only been ONE person that actually had an a street twin with an aluminum flywheel. Everybody else just says what they have heard. I wanted answers from people with experience, not hearsay. In addition there were a couple with single disc clutches that had aluminum flywheels and were happy with them.

[firebird_1995]

I can tell you the guy I bought my 383 from had the aluminum twin disc and street drove it for 25k miles. He didn't have any issues with it. If you want I can give you his number and you can call him to get real feedback on it. He's a great guy and won't yank your chain.

[BALLSS]

There has only been ONE person that actually had an a street twin with an aluminum flywheel. Everybody else just says what they have heard. I wanted answers from people with experience, not hearsay. In addition there were a couple with single disc clutches that had aluminum flywheels and were happy with them.

Yes IIRC there was ONE person running the Twin with AL FW and he may certainly be happy with it.

While the list of Twin users running the AL FW may be quite a bit shorter than the ones running the Steel you may get more responses from those who do run the AL. Many of us who do have the Twin asked the same ? and given the available choice went with Steel.

The + of AL is the motor will rev faster. The - is that lighter means less inertia so on initial launch be it normal street or drag racing you need higher RPM (not a lot but more) to overcome the "bog" of engagement. From a basic standpoint this is no big deal and driving /engagement technique can be adjusted. But the inertia of the steel FW, IMHO, makes for better street and 1/4 mi use

You are getting a "deal" on the AL Twin kit and you may be quite happy with it. Just giving my $02

[ringmaster72]

That is pretty much what I was thinking. Unless somebody came out and said they had one and it was awful on the street, I was going to give it a try. I went ahead and bought the aluminum fw one yesterday. It was on Mcleod's ebay store and was $1125. The cheapest I could find a new steel one was almost $1400.

[BALLSS]

The Wilwood 13/64" MC it comes with is a nice piece. I got my steel kit from JEGS for $12xx last year. The $1125 is a good deal

pay close attention to the shims on each stand as they need to go back EXACTLY when you install the clutch

[ringmaster72]

Gotcha on the shims, but what did you do for balancing? For a stock bottom end LT1, the flywheel is weighted. Did you buy the Mcleod weights for their flywheel?

[BALLSS]

Gotcha on the shims, but what did you do for balancing? For a stock bottom end LT1, the flywheel is weighted. Did you buy the Mcleod weights for their flywheel?

McLeod offers both neutral (for internal balanced motors) and stock (with counterweight) for external balanced motors. Different part #'s

In reality they are the same FW as the weight is just screwed on. I ordered the neutral balanced one as my engine is internally balanced and it came without the weight but has the 4 threaded holes the weight would screw onto. For me the problem was that with the 4 holes taped for the weight my FW was 25 grms out of balance exactly where the 4 hole were. Machine shop had to add 3 screws/washers to compensate