1,6 DOHC or 1,8 DOHC?

yiorta · Post by **yiorta** » September 19th, 2006, 5:23 am

My mechanic says that my 1,6 Dohc head needs to be opened and redone plus change some valves... He asked for more than 1000Euros which means more than 1200$.
A friend changed this motor for the 1,8 (but without any job on the head) for the same money.

I wonder what should I do. What do you guys think?

lowflyinmx3 · Post by **lowflyinmx3** » September 19th, 2006, 6:05 am

For 1200$ i would go ahead and swap in the 1.8. You'll have more power and still be sitting on decent gas mileage. Plus you have a bigger aftermarket support. But thats just my 2 cents.

Boris · Post by **Boris** » September 19th, 2006, 9:51 am

If you can find a 1.8L with good compression do the swap. Keep in mind that if you're buying a used engine, you might have to do head work on the new one too

yiorta · Post by **yiorta** » September 20th, 2006, 1:52 am

Boris wrote:If you can find a 1.8L with good compression do the swap. Keep in mind that if you're buying a used engine, you might have to do head work on the new one too

Yes I know. That's why I assume that my 1,6 may be fine after the head job with less money. By the way the two engines have a difference of 8hp?

WingleBeast · Post by **WingleBeast** » September 20th, 2006, 5:37 am

umm you can swap in a goob BP for less than 700 bucks

yiorta · Post by **yiorta** » September 20th, 2006, 7:04 am

Here the motors are overpriced. The mechanics the same!

GringoEJS · Post by **GringoEJS** » September 20th, 2006, 7:15 am

Wow, where do you live? Anyway, he says you need to change some valves...did your timing belt break? Even if, I only charge around $300 to swap in a good running motor into an MX-3. It is an easy job and can be done in a day. Seems like your mechanic is taking advantage of you.

yiorta · Post by **yiorta** » September 20th, 2006, 8:30 am

My car has been examined from two authorised dealers and one friend mechanic. They found nothing responsible for the low idle under electrical loads and hesitation. So one authorised dealer said that the problem is that some 1,6 Dohc heads had problem and it needs to go to the drilling machine. I dont know much. What do you propose?

Post by **Custommx3** » September 20th, 2006, 9:42 am

The BP swap will only be that price if your car is manual, autos require alot more work.

atlantamx3 · Post by **atlantamx3** » September 20th, 2006, 11:37 am

Ehh thats only if you want to convert it to a manual.

The BP will bolt in as an auto as well.

WingleBeast · Post by **WingleBeast** » September 20th, 2006, 12:55 pm

i dont know about all this valve talk, the B6 isnt an intterupted engine, so nothing short of full detonation should ruin your valves. i think your getting taken for a ride

Post by **Custommx3** » September 20th, 2006, 2:59 pm

atlantamx3 wrote:Ehh thats only if you want to convert it to a manual.

The BP will bolt in as an auto as well.

How so?

The Autos have an ATCM which talks directly to the ECU.

yiorta · Post by **yiorta** » September 21st, 2006, 1:53 am

The car has manual transmission. I have to take a decision. But still so confused.