Diffenrence between Engine AR66301 and AR16102 - Alfa Romeo Forum
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(Post Link) post #1 of 17 Old 10-07-14 Thread Starter
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Wave Diffenrence between Engine AR66301 and AR16102

Hi Alfa owners,
My beloved GTV blew an engine a week ago and now I am looking for a new engine.
I have found an engine from a 164 but it has the code AR66301 and mine in the GTV is AR16102. As far as I can see the 164 engine has less power the GTV engine. But what is the difference? Is it only different mapping in the ECU or is there a difference in the engines? Cams etc?

Is there any issues about swapping the two engines?

Hope you can help.
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164 24V engines are different in various ways to the later 24V engines. You would be much better off finding a later motor.
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Yes you really don't want to use a 164V6.

What has actually blown on your GTV's V6 engine?
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(Post Link) post #4 of 17 Old 11-07-14 Thread Starter
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Thank you very much for your advice. I will keep looking for a new one.

I dont really know the english word for them but the bearings at the piston rods at cylinder 4-5-6 are ruined.
I found out that the previous owner changed the sump and used WAY to much silicon gasket. So the gasket had dissolved in the sump, causing a block of the oil pump. So cylinder head, crank and probably more, is totally dead.

Which engine codes would you go for? Sorry, I am new with Alfas
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Choice is limited.
You ideally want an engine from a GTV or Spider (early Spider only had 12v, so careful with that!).
A 2.5v6 from a 156 would fit straight in, but is 500cc short and has a poor torque curve, so far from ideal.

You could use the 3.0 engine from a 166, but there are differences and you'll need to swap some bits from yours.

There was a Lancia or two that used the 3.0v6, but I don't know if they are a straight swap or not.
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Okay thank you David. But I guess I have all the parts from the old engine, so could go for a 166 engine. Any specific codes to recommend?
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I think any 166 V6 will be ok. A friend had a cambelt failure on his '99 GTV 3.0 and fitted a 3.2 from a facelift 166.
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Okay, have found an AR16105 at ebay with 140000 Km at the meter. The price is 899€. Only engine,no parts.
Do you think that is a fair trade, the company offers 6 month warranty.
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You really want another GTV V6 engine rather than one from a 166 or 164 there are loads of small differences, wiring, top engine bracket, cam covers, 164 has a different timing belt set up etc

It will make the job a lot easier if you are replacing like for like

Ned
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Originally Posted by Motomoto View Post
Okay, have found an AR16105 at ebay with 140000 Km at the meter. The price is 899. Only engine,no parts.
Do you think that is a fair trade, the company offers 6 month warranty.
That is a CF3 GTV/Spider 3.0v6
There are detail external differences between CF2 & 3 but you have a CF2 to take things from.

I think it would be OK, but better for others to confirm before parting with any cash...!
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That is a CF3 GTV/Spider 3.0v6
There are detail external differences between CF2 & 3 but you have a CF2 to take things from.

I think it would be OK, but better for others to confirm before parting with any cash...!
Hi David

You are right but my advice would be to find a CF2 engine from a GTV as there are loads of differences, even the cam covers are different, I know these have got to come off to do a belt but I was using it as an example

Find the right engine and it will make a DIY replacement much easier

We probably have one in stock, I would have to check

Ned
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Hi Ned,
Great! Id like to hear if you have something at stock. Looking forward to hear from you.

Poul
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Did you check if you had an engine Ned /Autolusso?
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Did you check if you had an engine Ned /Autolusso?
No sorry I didn't look as I did not see your reply

Drop me an email and I will have a look tomorrow

Ned
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Hi Ned,
Dropped you an email. Looking forward to hear from you.
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Hi Ned,
Dropped you an email. Looking forward to hear from you.
Hi

I understand you are emailing Dan your chassis number so we can make 100% sure it is the right engine for you

Ned
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Yes, sent the chassisnumber today :-)
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