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Lrodri64
Samba Member
Joined: August 05, 2013
Posts: 34
Location: Puerto Rico
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 Posted: Sat Jul 07, 2018 9:10 pm Post subject: Type 4 vs type 1 rod journal difference |
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Hi,
Can some explain to me the difference (if any) is between a type 1 and type 4 rod ?
Thanks. |
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raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 21510
Location: Oklahoma City
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| Posted: Sat Jul 07, 2018 10:41 pm Post subject: Re: Type 4 vs type 1 rod journal difference |
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Different journal size, different piston pin size, different length.
The type 1 has a 69mm stroke....type 4 has 66mm or 71mm. Its not what different between the two rods.....its that nothing is the same.
Ray |
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raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 21510
Location: Oklahoma City
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| Posted: Sun Jul 08, 2018 12:00 pm Post subject: Re: Type 4 vs type 1 rod journal difference |
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| raygreenwood wrote: |
Different journal size, different piston pin size, different length.
The type 1 has a 69mm stroke....type 4 has 66mm or 71mm. Its not what different between the two rods.....its that nothing is the same.
Ray |
And to be clear.....the journal size difference I was speaking of is with the 1.7/1.8 rod compared to a 1600 type 1 rod. While the main journal diameter is the same....the type 4 rod width is about 3mm wider. Ray |
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Lrodri64
Samba Member
Joined: August 05, 2013
Posts: 34
Location: Puerto Rico
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| Posted: Mon Jul 09, 2018 6:59 am Post subject: Re: Type 4 vs type 1 rod journal difference |
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Could you by mistake install a type 1 rod in a type 4 engine?
That is my concern.
Is in a friends engine. The bought Carrillo style rods but I see too much lateral play. That is my doubt.
Thanks for answering. |
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raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 21510
Location: Oklahoma City
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| Posted: Mon Jul 09, 2018 8:05 am Post subject: Re: Type 4 vs type 1 rod journal difference |
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| Lrodri64 wrote: |
Could you by mistake install a type 1 rod in a type 4 engine?
That is my concern.
Is in a friends engine. The bought Carrillo style rods but I see too much lateral play. That is my doubt.
Thanks for answering. |
It has happened before if memory serves. The journal of the 1600 rod is the same diameter as the 1.7/1.8L type 4 rod......but the type 4 rod is a LARGE amount wider. Something like 3mm going off memory. Also.....again going off memory....the type 1 rod has a significantly different length. The 1600 is a 69mm stroke and the 1.7l/1.8l.....is a 66mm stroke.
So if you have the wrong rod....it should also be giving you problems with the piston deck height being in the negative numbers....like the piston sticking out of the bore.
Ray |
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