is my 96 geo metro 1.3 an interference motor?

Asked by May 24, 2012 at 04:41 PM about the 1996 Geo Metro

Question type: Maintenance & Repair

my timing belt broke and my guy says its an interference motor but everything i can find online says it is not. how can i find out for sure?

2 Answers

155

if you were to get any answers at all from the internet then i highly doubt they would mean anything close to what your mechanic means. the term of "interference" that he is talking about is the fact that the valves in the head run at very close tolerences to the crown (top) of the piston and that if the valve timing is not correct or in your case break a belt then some of the valves are left in the open position causing the piston crown to strike the valves, creating serious engine damage. If you are still unsure then i am fairly certain that in engeneering terms interferance is explained by an object that is slightly larger than the area it fits into creating what is known as interferance fit. in your engine the valves being exposed create a lager area than can fit when the piston comes to the top!

1 of 1 people found this helpful.
175

Yes, you will [at the least] bend the valves if you break the timing belt. Not so with the 3cylinder engines

1 of 1 people found this helpful.

Your Answer

Geo Metro Experts

  • #1
    Mark Grignon
    Reputation
    200
  • #2
    littlehorn
    Reputation
    110
  • #3
    griggi63
    Reputation
    70
View All

Related Models For Sale

Used Honda Civic
794 Great Deals out of 73,922 listings starting at $1,400
Used Geo Tracker
18 listings
Used Geo Prizm
48 listings
Used Toyota Corolla
899 Great Deals out of 57,648 listings starting at $1,488
Used Mazda MX-5 Miata
80 Great Deals out of 4,431 listings starting at $2,200
Used Ford Mustang
728 Great Deals out of 38,096 listings starting at $895
Used Suzuki Swift
4 listings
Used Jeep Wrangler
313 Great Deals out of 16,299 listings starting at $2,500
Used Honda Civic Coupe
223 Great Deals out of 14,651 listings starting at $1,495
Used Honda Accord
1,117 Great Deals out of 62,337 listings starting at $1,199
Used Pontiac Grand Am
1,067 listings starting at $1,899

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.