Graz Starter

[JordonMusser]

Anybody find anything that puts out more torque? Mine Bosch standard starter works ok as long as the battery is VERY fresh. Anybody found anything that work well?

I found this dude:

Lamborghini Gallardo V10 High Torque Starter Motor

High torque starter motor for Lamborghini Gallardo V10 models. It weighs 5 kg, is supplied with a terminal fitting kit, and is based on a Denso 2.0kW 'A/B' starter motor which has been modified to suit this particular application. This starter motor is 100brand new and is built to the highest...

mrfiat.com

 

[Brian Kissel]

Jordon,I have no experience with these, but the price certainly is in line with a Ford GT starter for the Ricardo. I’ll be watching this post with great interest. Thanks for asking this.

Regards. Brian

 

[Ron McCall]

What are you using for a battery? I ask because I built my GT-R using a XS Power X975 battery and a 2ga lead directly from the battery to the starter. After a few trips to the track, the car would fail to crank when hot. The battery showed 12.3v . I replaced the battery at the track with one from Braille and it continues to crank weather it is hot or cold.


Ron

 

[JordonMusser]

Brian - if that thing worked, id consider the price.. but not sure I want to be a guinea pig
Ron- biggest heaviest most expensive battery I could get at the local autoparts store. Platinum (bla bla bla). Agree that more cranking amps would help, but I have to believe that it SHOULD crank well with a battery of this size. Obviously a freshly topped off battery cranks a lot better. I have 1/0 (or better) b/w battery and starter. I saw or better, because for 70% of the run I have 1 awg as well (parallel). long story.

 

[Jerry Jackson]

Jordon, I posted this some time ago:

Battery/Starter Dilema

We are at the Go-Cart stage in our build and have found out that the AGM Braille battery (B14115) we are currently using is not large enough to consistently crank the SL-C supplied Bosch starter :cry:. When we use a large (650 CCA) lead acid battery in parallel with our AGM battery, we are able...

www.gt40s.com

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I still have the problem today. I solve it by starting with a QUICK stab and then a HOLD until started on the start button. Try it. It works every time when cold and most of the time when hot. I have not found a starter from a 3rd party. 2 'starter' people have told me they are sure this is a characteristic of the application and they think I proved by my marine battery connected from just below the starter. I have more than one stater, same with all. I am using a Braille Lithium battery.

 

[Ken Roberts]

I would recommend buying a Audi R8 OEM starter first. Here is a good example ....

Audi R8 starter OEM 2008 2009 2010 2011 2012 2013 2014 2015 001123026 | eBay

2008-2015 Audi R8 starter OEM.

www.ebay.com

 

[JordonMusser]

jerry,
Thanks.. very interesting, I will give it a go. Sounds like it is definitely the starter. BTW, I had a Gallardo that never started well, and my roommate had one as well.. he had to keep a fresh (6months or so was it) battery or it sometimes wouldn't crank.

its gotta be the starter. hard to believe there isn't something better!

 

[JordonMusser]

ken- In theory I have an OEM (bosch) starter... Also note my above about my personal experiences with an actual Gallardo (or two)

have you found the 'true' OE starter to be better?

 

[Ken Roberts]

Unfortunately The engine has never been started yet. It was installed for my LS9 engine /Graz V10 transaxle for my next project.

I would try one lead of a jumper cable as a temporary ground. Hook it directly from the negative battery terminal to one of the starter bolts.

The Bosch starters (SR0408X) as provided from RCR are for a 4cyl Jetta engine. Not sure if they have the same windings inside as a OEM Audi R8 starter. The electrical connector is different also. Here is a picture of the OEM R8 starter.

 

[Jerry Jackson]

Ken I have both there is NO difference. I got the Audi starter from local dealer.

 

[Jasper]

Don't underestimate the importance of a THICK cable. I know you mentioned a 1/0 cable, but do you know your voltage drop during cranking?

In my case (CAV GT40 with a Ford 302) I only had about 1m or cable, but it was an AWG4. lost 1.5Volt across the length of the cable, thats a lot of torque you lose. (voltage = torque, amps = power, at least thats my analogy, but i'm sure an electrical engineer can tell me how incorrect that is )

 

[JordonMusser]

Ya, I have 1/0 + 1 awg (parallel) running from the battery to about 3ft shy of the starter where its 1/0. Should be pretty stout. Obv any voltage loss hurts, but I think I am not outside the range here.

 

[Neil]

I also suggest a 1/0 ground return cable direct to the battery negative post if you want as low resistance as possible.

 

[Del]

For what it's worth I measured my cranking amps at the starter with full load, was 88A for my LS3

 

[Neil]

Have you checked the peak current as the starter begins cranking? You might need a 'scope to see the fast peak.

 

[Bill Kearley]

First load test the battery at full charge, if good, check voltage drop while cranking the engine ( hot and cold ) not less than 9.6 volt, hot or cold. This will prove the starter assuming proper wire size and clean connections are good.

 

[Ed Davis]

I had to go with a battery with 1100cca to crank first time every time. I was thinking someone should be able to rewind the starter to make it stronger.

 

[Del]

When to go slow down video so could grab

Have you checked the peak current as the starter begins cranking? You might need a 'scope to see the fast peak.

I took HD video and slowed it down in editing. Not scope good but hopefully okay

 

[Ken Roberts]

Just for reference......the Audi R8 has the battery in the nose and runs 2/0 cable to the engine compartment and then branches off to the starter with a 2/0 cable size.

 

[Ken Roberts]

Also for reference the Audi R8 battery has a CCA of approx 900.