13 replies to this topic

[useless]

Hello,

I'm as my title surgests useless when it comes to things i don't know about mini engines!

My Question if anybody could please help is...... I'm now upgarding my 1380 engine to a 286 cam with 1.5 full roller rockers and i've been told it maybe usefull also to change the drive between the crank and cam upgrading to a duplex adjustable timing set.

I think i know that there is, two options, 1 the chain 2 the belt upgardes(looks like a moden engine belt system)

Does anybody know if either are any good? Should I bother at all?

I use it for drag racing at santa pod for fun so any help beating my friend up the strip will most usefull.

Thank you very much! :'(

[miniboo]

there is also the slark cogs only design which looks very impressive although i am not usre how well it works

[Guess-Works.com]

Personally, if you want the most reliable and longlasting timing drive system, get a Kent Silent Chain or sometimes called a High Velocity chain.. It's fully adjustable, which you need to get your cam timing spot on, and does not stretch, and out last a belt drive system.

I've had on on my engine for 5 years, and at the last rebuild, showed pratically no wear ( that's 30k miles )

but at worst, fit a duplex...

[miniboo]

here:

http://www.slarkrace...amshaft_kit.htm

[Guess-Works.com]

Just imagagine the noise from that you think SC drops a loud, yes agreed the ultimate timing setup....



Silent Chain available from minispares 108 inc vat ( but you'll get a discount when mentioning TMF )

or try Min-its www.min-its.com

[useless]

Just imagagine the noise from that you think SC drops a loud, yes agreed the ultimate timing setup....



Silent Chain available from minispares 108 inc vat ( but you'll get a discount when mentioning TMF )

or try Min-its www.min-its.com

Super stuff just placed the order! Many thanks indeed!

Merry christmas & new year to you!

[Jordie]

keeping on the duplex thread, how many countersunk screws are required? I know people grind them flat, but ive bought 2 countersunk ones with my order. is that enough?

[Guess-Works.com]

keeping on the duplex thread, how many countersunk screws are required? I know people grind them flat, but ive bought 2 countersunk ones with my order. is that enough?

Yes... don't forget to countersink the timing plate

[Jordie]

explain..... lol

[Guess-Works.com]

If you have countersink bolts, the there needs to be a countersunk recess in the timing plate ( the bit which attaches to the engine ) to accept the countersink head, othewise it'll just stand proud as before... Only the timing plates on A series duplex equiped engines had this as std, as no A+ engines were ever fitted with a duplex set as stand the timing plates are flat ( no counter sink )

Will try and find a couple to show difference

[Big_Adam]

you can use the screws that hold brake drums on for it!

[Dan]

Unless you have spacered drums, they'd be far too long.

[Guess-Works.com]

lol

[The Matt]

I looked into one of those silent chains John, they look/sound like an excellent modification! I was ordering from Minispares and they were out of stock at the time, so I went for a Kent duplex vernier, but I wish I hadn't now as there was no rush after all!