TS rod dimensions - Alfa Romeo Bulletin Board & Forums
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post #1 of 14 (permalink) Old 03-21-2019, 04:17 PM Thread Starter
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TS rod dimensions

I am looking to buy a set of MaxSpeed rods for a TS. (164)
Anybody have dimensions Center to Center?

Experiences with these rods? I know Carillo are the standard, but the price is considerably lower.

Thank you.

Regards, Alberto

This is what they provide:

For Alfa Romeo 75 Milano 2.0L Twin Spark TS H-Beam Connecting Rods Conrods
Feature
Fit for For Alfa Romeo 75 Milano 2.0L Twin Spark TS
Type Forged 4340 EN24 Aircraft Chrome Moly Steel H-Beam Connecting Rod
Quantity 4 Pieces as showing in picture
Bolts Including ARP 2000 bolts
Bolts size Genuine ARP 2000 3/8" bolts
Lubricants Including ARP Ultra Torque Assembly Lubricants
Tolerance Balanced to +/- 1 gram in set
Note Extra cost for upgrading to ARP L19 bolts
Warranty 1 year
Dimensions
Center to center length 156.03mm
Big end diameter 53.7mm
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post #2 of 14 (permalink) Old 03-22-2019, 12:28 AM
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seems to be correct like the nord rods are 157mm center to center
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post #3 of 14 (permalink) Old 03-22-2019, 07:31 AM
Richard Jemison
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Rods

I "understand" that the 164 & 75 TS rods are the same as Nord as the stroke is the same. The 155 TS has a longer stroke and uses a shorter rod.
Look at their info, they show both rod lengths.

The factory Nord rod is 156.97mm

I think you are looking at the rod for 155 version

Richard Jemison
RJR Racing

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post #4 of 14 (permalink) Old 03-22-2019, 07:39 AM
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Quote:
Originally Posted by Alfar7 View Post
I "understand" that the 164 & 75 TS rods are the same as Nord as the stroke is the same. The 155 TS has a longer stroke and uses a shorter rod.
Look at their info, they show both rod lengths.

The factory Nord rod is 156.97mm

I think you are looking at the rod for 155 version
Richard, I´ve recently meassured a TS rod (engine 6224) with a nord rod and they werent the same, being the TS shorter
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post #5 of 14 (permalink) Old 03-22-2019, 07:53 AM Thread Starter
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Thank you Richard,

in reality my rods are from an engine that was in a fwd. TS 164

They are not the same as the Nord engines by almost 1.5mm. Have not measured technically,
Just eyeballed it, but it definitely is shorter. Not the dimensions that Max states on their catalogue.

Potentially, the 155 is different from the 164, both being 2 liters, not quite the same cc's.

Regards, Alberto

Last edited by aguirola; 03-22-2019 at 07:58 AM.
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post #6 of 14 (permalink) Old 03-22-2019, 02:29 PM
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Check this:
https://www.alfabb.com/bb/forums/eng...onversion.html

"
NORD: 157 mm
75 TS: 156.1 mm
155 TS: 153.1 mm
"

Phase 1 164 2.0 TS rods should be the same as 75 2.0 TS rods: same displacement.
Phase 2 164 2.0 TS is the same as the 155 2.0 8V TS, with the longer stroke. The only difference between these engines is the oil cooling: 164 water heat exchanger vs 155 air heat exchanger.
155 1.8 8V TS has the same rod size as Nord 2.0 (and as well 84 mm bore, but 10 mm less stroke), 155 rods 16 grams heavier.

But it's up to you: if you'll buy new pistons you can order them matching the rod size. Shorter rods = torquier, more wear. Longer rod = higher rpm, more hp, less wear (if not using it too much for the high rpm ).

I opted for the Nord length MAX rods in a 155 2.0 bottom end, with new custom pistons. Not installed yet.
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post #7 of 14 (permalink) Old 03-22-2019, 03:47 PM Thread Starter
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Quote:
Originally Posted by Macaco View Post
Check this:
https://www.alfabb.com/bb/forums/eng...onversion.html

"
NORD: 157 mm
75 TS: 156.1 mm
155 TS: 153.1 mm
"

Phase 1 164 2.0 TS rods should be the same as 75 2.0 TS rods: same displacement.
Phase 2 164 2.0 TS is the same as the 155 2.0 8V TS, with the longer stroke. The only difference between these engines is the oil cooling: 164 water heat exchanger vs 155 air heat exchanger.
155 1.8 8V TS has the same rod size as Nord 2.0 (and as well 84 mm bore, but 10 mm less stroke), 155 rods 16 grams heavier.

But it's up to you: if you'll buy new pistons you can order them matching the rod size. Shorter rods = torquier, more wear. Longer rod = higher rpm, more hp, less wear (if not using it too much for the high rpm ).

I opted for the Nord length MAX rods in a 155 2.0 bottom end, with new custom pistons. Not installed yet.
Hello Macaco, Here, TS engines are in a rare category, as very few were imported.

All I have is the 164TS. No option unless I start shipping motors from EU to USA. Potentially expensive.
My plan is a track motor for fun days, no racing 10/10.

Please tell me your thoughts, and if you like write to:
alberto.guirola at gmail.com

Regards, Alberto
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post #8 of 14 (permalink) Old 03-23-2019, 08:49 AM
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Quote:
Originally Posted by aguirola View Post
Hello Macaco, Here, TS engines are in a rare category, as very few were imported.

All I have is the 164TS. No option unless I start shipping motors from EU to USA. Potentially expensive.
My plan is a track motor for fun days, no racing 10/10.

Please tell me your thoughts, and if you like write to:
alberto.guirola at gmail.com

Regards, Alberto
but you have the phase 1 or the phase 2 164 TS engine? heads with fitting for distributors or not.
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post #9 of 14 (permalink) Old 03-23-2019, 11:12 AM Thread Starter
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but you have the phase 1 or the phase 2 164 TS engine? heads with fitting for distributors or not.
The distributor is on the backside of the head as it is a FWD car.
I ignore if it is 1st or 2nd phase. I am assuming 1st, as not too many were imported here.
Would the engine number be useful?

Thanks for the help!

Regards, Alberto
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post #10 of 14 (permalink) Old 03-23-2019, 11:22 AM
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Distributor on the head is phase 1 indeed. Phase 2 (same as 155 TS) doesn't have the rotating distributor and so a more "clean" head.

Here a picture of the difference in pistons, left to right: Nord 2.0; 75 2.0 TS; 155 2.0 TS; 155 1.8 TS.
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post #11 of 14 (permalink) Old 03-23-2019, 11:41 AM Thread Starter
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I would go Electromotive, or similar. No distributor.

Still not clear if this engine is worthwhile to develop to a track unit, not for competition, just fun

Regards, Alberto

Last edited by aguirola; 03-23-2019 at 02:22 PM.
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post #12 of 14 (permalink) Old 03-23-2019, 02:53 PM
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To be honest, I would say no for a phase 1 164 bottom end.
I've got a trash block (just the bottom end) here from a phase 1 164 and it has the shorter back: so modifications needed if you want to put it in a 105. No oil squirts for piston cooling. Not worth the effort.

You don't mention where you want to put it in, but if it's for a 105: better take a Nord bottom end and use the 164 head. If you want to use the original pistons: use the 156.x mm rods.

If you want to spend some money: get 155 or phase 2 164 engine parts from Europe (if got some ).

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post #13 of 14 (permalink) Old 03-23-2019, 03:53 PM Thread Starter
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Quote:
Originally Posted by Macaco View Post
To be honest, I would say no for a phase 1 164 bottom end.
I've got a trash block (just the bottom end) here from a phase 1 164 and it has the shorter back: so modifications needed if you want to put it in a 105. No oil squirts for piston cooling. Not worth the effort.

You don't mention where you want to put it in, but if it's for a 105: better take a Nord bottom end and use the 164 head. If you want to use the original pistons: use the 156.x mm rods.

If you want to spend some money: get 155 or phase 2 164 engine parts from Europe (if got some ).
That sounds good, yet I am assuming that a Nord block has shorter head studs?
And yes, it is for a 105. So I guess the 164 is not good.

So what makes the 155 so much better?

I think the freight would be a bit high

Regards, Alberto
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post #14 of 14 (permalink) Old 03-25-2019, 02:23 PM
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Yes, the Nord studs are a bit shorter.

It's just the piston cooling, the side effect of better small end lubrification and the longer stroke that makes the difference in the 155.

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