4K 80Amp Alternator Upgrade!

[Hiro Protagonist]

Funnily enough, this has been in the FAQ for some time (although I don't recall the VL reference being there all the time)

 

Rollaclub FAQ - K-series alternator

[ke70dave]

More electrical power but I bet that it puts more load on the engine making it lose about .5 of a kw.

 

haha thats what i was gonna say!

 

and on a 4k, 0.5kw is like a 30% reduction in power.

 

nice write up though. pretty easy to do by the looks of it.

[altezzaclub]

14.5 volts times 80amps takes out 1.16KW....

 

So you can see further with your headlights, but not drive as fast to get there!! :laff:

 

Nice work Evan!

[Hiro Protagonist]

14.5 volts times 80amps takes out 1.16KW....

 

So you can see further with your headlights, but not drive as fast to get there!! :laff:

 

Nice work Evan!

 

You're only adding 40-45A though (as the Denso is 35A, Bosch 40A), so your additional power loss is more like 0.6kw.

[agius]

doing this real soon

 

so over the head lights being a strobe light with the sub on

[Evan G]

drop me a pm if your having troubles, don't forget the longer stator bolts!

[agius]

will do dude thanks :)

[towe001]

Funnily enough, this has been in the FAQ for some time (although I don't recall the VL reference being there all the time)

 

Rollaclub FAQ - K-series alternator

True, but there's no write-up of how to do it. Its just a tiny

However, here's the beauty part. Bosch design all their alternators with the same rear housing, just with different front housings to suit the motor they are intended for. So you can buy yourself a 60A Ford Falcon alternator, or an 80A VL Turbo alternator, and rebuild it with a Bosch KE front housing and longer stator bolts, and whack it straight onto your K motor. If you want to underdrive the alternator (say you're bulding a big-rpm race motor) use a Mitsubishi Sigma front pulley.

bit of what you do.

Its a good write-up. You get my rep Mr E :jamie:

[Evan G]

True, but there's no write-up of how to do it. Its just a tiny

 

bit of what you do.

Its a good write-up. You get my rep Mr E :jamie:

 

However, here's the beauty part. Bosch design all their alternators with the same rear housing, just with different front housings to suit the motor they are intended for. So you can buy yourself a 60A Ford Falcon alternator, or an 80A VL Turbo alternator, and rebuild it with a Bosch KE front housing and longer stator bolts, and whack it straight onto your K motor. If you want to underdrive the alternator (say you're bulding a big-rpm race motor) use a Mitsubishi Sigma front pulley.

 

in the FAQ it just tells you to change the front cover over to the vl alternator, THIS IS FALSE!, all the vl internals must be fitted in the corolla shell

Edited September 18, 2010 by Evan G

[agius]

this should be pinned!

[parrot]

I suspect the list of donors could be considerably longer. There would be a lot of euro cars out there with Bosch alternators in the 60 - 80W range.

 

Recently found a brand new 60W Bosch alternator at our local wrecker in an Alfetta. This will probably end up in the KE15, as 80W is probably overkill for that. I plan on looking at the various 80's/90's BMW's to see what they have too.

[7FOUR7]

I have a 120amp r33 alternater at home which is a bolt up to a vl, think you could do the same with it for 120 amps of powahhhhhhh??

[nz_83_dx]

 

so over the head lights being a strobe light with the sub on

 

 

 

so true

[ninja-philbo]

wouldnt melt everything with a 120 amp would you.

[Evan G]

expect no power from the engine under full electrical load!