HarleyTechTalk

I'll be pulling the trigger on one of these in the next couple days. I've already purchased the Woods TW 777 cams and install kit. I'll be using the stock throttle body for now. I'll also be going with the Level B heads. So what do the experts recommend? The 107 or 110 and upgrade throttle body later.

I'm no expert but have built multiple 107s and 110s and used those 777s. I would recommend a 55 or 58 tbody 4.9 or 5.3 inj with a good tune. If overall cost is concern, save w the 107 and spend on the tbody

I hate to say it but the throttle body will have to wait. The difference between the kits is only $100. I know I'll need a bigger throttle body to see the full potential of either kit but I have to go with what the budget will allow at this time.

No expert either, but with only $100 dollar spread I'd get the 110.
A few don't like the thin spigots. But meh, what's an extra .032" with the 3.9375" cylinders. 

Search the Dyno runs section for 110".
There's quite a few with drop on 110 kits, stock throttle bodies and heads even.
Pretty much all of them with torque up in the 120's, HP 110 +/- a few range.
But then again a lot of the 107" kits are probably pretty close.
Flip a coin. 
Throttle body seems to get the torque and HP square.
Easy to throw a new throttle body on later.

I use the 107 Kits to refresh engines. Very happy with them. I have a shop 2 miles from my home who does the heads - stock $200 each.

I'm no expert either...I know your on a budget but how's the bottom end???...I went from 96 bored to 107 built by one of the vendors here using Woods TW-7HG-7 gear drives with Stg II heads. Dynoed at 121HP & 127 TQ.

Quote from: Justpassingas on July 15, 2020, 06:13:56 AM
I'm no expert either...I know your on a budget but how's the bottom end???...I went from 96 bored to 107 built by one of the vendors here using Woods TW-7HG-7 gear drives with Stg II heads. Dynoed at 121HP & 127 TQ.

Those are great numbers. I've already purchased the triple 7s and the install kit. Going to have a machinist friend of mine check run out while I have it apart. Hopefully I can get in touch with Fuel Moto sometime today. Their phone line stays pretty busy and their hours seem to be about same as mine so it's hard to get through.

Quote from: Justpassingas on July 15, 2020, 06:13:56 AM
I'm no expert either...I know your on a budget but how's the bottom end???...I went from 96 bored to 107 built by one of the vendors here using Woods TW-7HG-7 gear drives with Stg II heads. Dynoed at 121HP & 127 TQ.

Good build.  What does the TQ curve look like from 2000-3000 rpms; dyno sheet?

Fuelmoto posted a dyno chart a few years ago. It was a 107 with a 50 TB vs 55 TB . the difference was tiny, the torque curve of 55 mm is just sligtly to the right of 50 mm . 1 or 2 HP gained .

I have a 107 on my roadking ( SE heads , TW555 , stock 50 TB) . With the stock injectors ( 4.35 ) , the duty cycle reached 100% . I exchanged them with 5.3 SE. Now , i reach 70% .

Warning , the 5.3 SE are actually 4.9 gr/sec .

I shipped my heads off to Fuel Moto yesterday. Once they receive them they are going to contact me with exactly what build I'm going with. I'm still leaning toward the 110 and upgrading the throttle body this winter when funds are available. I know I won't realize the full potential but at least the potential will be there when I'm ready.

You don't need bigger than a 50mm TB on a 107 or 110, especially with those B level heads IMO.  You'll gain a couple HP at the very top of the top of the RPM range and prob 1 HP and TQ under the curve. 

If you have the $400 for a SE TB, great, if not, don't sweat it. Of course, the nice TB are HPI.

And remember if you do the throttle body later , you'll have to tune it again, paying twice for the tune. That'll make the cost of doing the throttle body later very expensive  imho.

I understand the retuning part. Part of building a bike I suppose. I'll probably run on a canned map from Fuel Moto until it's broke in then make up my mind about going any further. Who knows....I may not want to go any further. This is the first big bore kit on a bike of my own. Before it's always friends or friends of friends I've wrenched on to hop up.

Quote from: Bagger on July 19, 2020, 04:32:59 AM

Quote from: Justpassingas on July 15, 2020, 06:13:56 AM
I'm no expert either...I know your on a budget but how's the bottom end???...I went from 96 bored to 107 built by one of the vendors here using Woods TW-7HG-7 gear drives with Stg II heads. Dynoed at 121HP & 127 TQ.

Good build.  What does the TQ curve look like from 2000-3000 rpms; dyno sheet?

Sorry...Tried posting in dyno section but got deleted...Mods deleted my post here again

Dyno charts need to be posted in SAE. Yours were standard. Read the rules.

Well people it's going to be a 107 " with the Level B heads. I sent my heads in this last Saturday. I received an email from Travis at Fuel Moto today stating they received my heads and would take about 3 weeks to process. I called him and also put the 107" Extreme Duty cylinder and piston kit on the order. He said they recommended the 107 kit because they have some tuners burn down the 110 kit because of trying too hard with the tuning and not having proper ventilation. Thank you all for your input. I just like getting ideas from many different positions.

Why not have your throttle body bored?

Quote from: Deye76 on July 23, 2020, 04:10:53 PM
Why not have your throttle body bored?

One step at a time. I pretty much busted the budget for now. I'm planning on more mods this winter. Primarily to the drive train and tweaking the engine.

Quote from: Jaystn62 on July 23, 2020, 04:23:58 PM

Quote from: Deye76 on July 23, 2020, 04:10:53 PM
Why not have your throttle body bored?

One step at a time. I pretty much busted the budget for now. I'm planning on more mods this winter. Primarily to the drive train and tweaking the engine.

The fee is nominal when doing the BB... oppose to later more labor, another dyno tune involved
Measure twice, cut once method 

Quote from: Tommy D on July 23, 2020, 09:46:22 PM

Quote from: Jaystn62 on July 23, 2020, 04:23:58 PM

Quote from: Deye76 on July 23, 2020, 04:10:53 PM
Why not have your throttle body bored?

One step at a time. I pretty much busted the budget for now. I'm planning on more mods this winter. Primarily to the drive train and tweaking the engine.

The fee is nominal when doing the BB... oppose to later more labor, another dyno tune involved
Measure twice, cut once method 

Like I said before the budget is already busted. I couldn't really afford to do what I did. And the dyno will have to wait until this winter. This is a real budget build. I have to spread it out over time. I know most of you don't see that or realize it in your builds but it's how I have to do it. I appreciate all the input and advice but in the end I have to do it this way.

Looking forward to seeing how it turns out, I've not paid attention to the 777 cam, interested in your opinion once it's all together.
Sure, it's not the perfect build just yet (not many of those exist) but it's pretty substantial and will be a lot of fun.

Quote from: Hossamania on July 24, 2020, 05:16:31 AM
Looking forward to seeing how it turns out, I've not paid attention to the 777 cam, interested in your opinion once it's all together.
Sure, it's not the perfect build just yet (not many of those exist) but it's pretty substantial and will be a lot of fun.

Travis said it will take about 3 weeks to do the heads. I guess with this Covid 19 a lot of shops are overwhelmed. Every builder I spoke with at Fuel Moto said the same about the triple 7 cams in a 107 with 10.5 compression. Like you said it should be a lot of fun.

You people are a bad influence. I contacted Travis at Fuel Moto today. He said they'd add the throttle body to the current order for a "nominal" fee. SOOOO....I'll be shipping it out tomorrow. Guess I'll add another credit card payment.

See how it all comes together? Good on them helping you out, good on you biting the bullet to get the TB done.

When this is all said and done I better be smiling from ear to ear. And hope the Ole Lady don't find out how far I'm in to this or I'll be sleeping with the bike......