103 vs 107 build advice needed

[hogmandon]

Not offering any build info but I ran a 590 cam with stock springs and broke a spring what a mess it made. Harley said good for 600 lift. Be careful with your choices.

[boooby1744]

With that exhaust,it would be a good idea to lower overall gearing.

I'm looking at the Andrews 30T and the 31T  trans pulley.... what would you recommending for my application?

Thanks, I have never done any changes to gearing before, so this is new territory for me. 

Go to the twin cam stickie and scroll to  how to gear down a 202 Heritage. That should give you most of the info you Red.

[Adam76]

With that exhaust,it would be a good idea to lower overall gearing.

I'm looking at the Andrews 30T and the 31T  trans pulley.... what would you recommending for my application?

Thanks, I have never done any changes to gearing before, so this is new territory for me. 

Go to the twin cam stickie and scroll to  how to gear down a 202 Heritage. That should give you most of the info you Red.

Thanks, I read the thread, good info.

I'm still confused which is the best way to lower gearing...

1. Andrews 30T trans sprocket and a new shorter 132T rear belt (quite costly) and do I need any other parts? bearing seals etc?
2. 30T Evo Industries compensator eliminator sprocket and chain (also costly)
3. simply add a larger 70T rear wheel belt pulley? (may not make enough diffrence?)

Thanks

[boooby1744]

I figure the 31 tooth pulley is the least expensive. You'll still need to at least remove the inner and outer primary. No easy or inexpensive way out.

[Adam76]

I figure the 31 tooth pulley is the least expensive. You'll still need to at least remove the inner and outer primary. No easy or inexpensive way out.

Thanks, that sounds like a good idea.

Besides the inner primary seal?  mainshaft seal? anything else / parts needed to do the job?

Cheers

[JSD]

You can fit a 30 trans. Each tooth up or down moves axle 1/8". I have fitted 30 to 34 on bikes. Good time to replace primary bearing and do some mode to the stupid chain tensioner.

[Adam76]

You can fit a 30 trans. Each tooth up or down moves axle 1/8". I have fitted 30 to 34 on bikes. Good time to replace primary bearing and do some mode to the stupid chain tensioner.

Thanks JSD, that's great that a new belt may not be required if I have half inch play at the rear axle.

This bike has only done 20K miles, so you think it's necessary to replace inner primary bearing??

Cheers

[RTMike]

Ok here is my opinion,#1 is TTS-150,10:1-10.3:1 compression,ported heads,58mm throttle body and larger injectors with a good exhaust system.
#2
T-Man 555,9.5-9.8:comp,stock or ported heads,throttle body and injectors with a good exhaust system.

The T-Man 555 is a very good bolt in cam with a good tune and a pipe,if your on a limited budget.

Remember is a large part the performance and curve on you bike and build,good luck MG

[JSD]

You can fit a 30 trans. Each tooth up or down moves axle 1/8". I have fitted 30 to 34 on bikes. Good time to replace primary bearing and do some mode to the stupid chain tensioner.

Thanks JSD, that's great that a new belt may not be required if I have half inch play at the rear axle.

This bike has only done 20K miles, so you think it's necessary to replace inner primary bearing??

Cheers

Your choice i would not expensive. At least the seal & starter seal. Tack weld chain adjuster or fit the limiter kit. A 48 Andrews cam tune he will be happy if thats his budget. No complaints just smiles if he does not want to frow $ at it cam & push rod kit aint cheap in OZ . Change over or get your own heads done from Ram or elsewhere is close to $1400 now. Throttle body & injectors etc you know how it goes and so $ quickly add up. Then a good set of lifters $400 and so it goes on. Times are tough and im finding most dont to spend. HD performance parts prices Suck in OZ . Best Adam later Mate

[Adam76]

You can fit a 30 trans. Each tooth up or down moves axle 1/8". I have fitted 30 to 34 on bikes. Good time to replace primary bearing and do some mode to the stupid chain tensioner.

Thanks JSD, that's great that a new belt may not be required if I have half inch play at the rear axle.

This bike has only done 20K miles, so you think it's necessary to replace inner primary bearing??

Cheers

Your choice i would not expensive. At least the seal & starter seal. Tack weld chain adjuster or fit the limiter kit. A 48 Andrews cam tune he will be happy if thats his budget. No complaints just smiles if he does not want to frow $ at it...
Times are tough and im finding most dont to spend. HD performance parts prices Suck in OZ . Best Adam later Mate

Thanks JSD, yes times are very tough and his budget is not huge. Only want to do what's necessity.

Can you please tell me what a starter seal is and also what is the limiter for the chain adjuster you have mentioned?

Cheers Adam

[JSD]

The seal in primary on starter shaft. Forget who makes the primary tab self adjuster its been posted here. Evolution Industry but it is Sunday morning.

[Hilly13]

They call it The Bump Stop and it's 70 greenbacks plus the ride.

[JSD]

Thanks Hilly . Evolution Industries ?

[Hilly13]

Thanks Hilly . Evolution Industries ?

Yes sir

[FSG]

https://harleytechtalk.com/htt/index.php?topic=117857.0

you can get the bump stop in Brissie for 105 skins

https://www.easyr.com.au/evolution-industries-evo-1070-1205-the-bump-stop-p


Personally I'd adjust the stocker to get it right then spot weld it so that it don't move 

[FSG]

not a real good pic (clipped from one of Rays) but like this I'd weld the stock tensioner

but then I've also tacked IPB races to mainshafts AND Sprocket Shaft Extensions to Stripped out rotors      

[FSG]

this one belongs to FXDBI and has been tig'd both sides   

[Hilly13]

Necessity is the mother of invention FSG 😁👍

[Adam76]

this one belongs to FXDBI and has been tig'd both sides   

Thanks FSG, for sharing that great info and the pics. 
Pictures always speak many words.

[Adam76]

Ok here is my opinion,#1 is TTS-150,10:1-10.3:1 compression,ported heads,58mm throttle body and larger injectors with a good exhaust system.
#2
T-Man 555,9.5-9.8:comp,stock or ported heads,throttle body and injectors with a good exhaust system.

The T-Man 555 is a very good bolt in cam with a good tune and a pipe,if your on a limited budget.

Remember is a large part the performance and curve on you bike and build,good luck MG

Thanks RT.

You mention the Tman555 - I'm assuming you mean the Tman555 Torqster?

Also, your last line you said "remember.... is a large part of the performance and curve on your build..." We're you referring to the exhaust??

Trying to match a good cam to a softail true dual exhaust system is the challenging part 

I'm starting to think that a cam only upgrade on these 103HO motors not worth the 5/ 5 gains over the fairly decent stock cam, and a good tune with the stock cams  is probably the best money spent??

[Hossamania]

Again, all depends on your budget and goals.

[Hossamania]

Should be able to get 10/10 or more out of a cam change

[Hilly13]

Cam change also (hopefully) adds a bit of longevity with new inner cam bearings, lifters and great tune 

[Adam76]

Should be able to get 10/10 or more out of a cam change

OK, thanks Hoss. Didn't think it would be that much.

[Adam76]

Cam change also (hopefully) adds a bit of longevity with new inner cam bearings, lifters and great tune 

Yeah, we were doing the inner cam bearing and lifters anyway....