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Engine Specific Info and Questions => IDI Engine => Topic started by: shegel on December 05, 2007, 06:21:36 pm

Title: comparrison
Post by: shegel on December 05, 2007, 06:21:36 pm

what is an easy way to tell if a car has a 1.6 hydro head or a mech head...im considering the 1.6/1.9 franken motor.

Title: comparrison
Post by: vanagonturbo on December 05, 2007, 07:52:29 pm

easy way is to notice an extra oil return galley between cylinder one and two. It is similar to the oil return between three and four but a little bit smaller.

I think you will need to look for a hydro block and not the head if you intend to build the 1.6/1.9 combo.

Title: comparrison
Post by: shegel on December 05, 2007, 08:04:25 pm

Quote from: "vanagonturbo"

easy way is to notice an extra oil return galley between cylinder one and two. It is similar to the oil return between three and four but a little bit smaller.

I think you will need to look for a hydro block and not the head if you intend to build the 1.6/1.9 combo.

ok...but is that the easiest way to tell if i have a hydro engine or a mech engine.

Title: comparrison
Post by: vanagonturbo on December 05, 2007, 08:34:38 pm

yes. Yours should be hydro if its original. I have seen scarier things though. I have a rabbit truck at the shop right now and it should have a 1.6l in it but alas, it has a 1.5l.

Title: comparrison
Post by: burn_your_money on December 05, 2007, 10:00:20 pm

86 is the change over year, it could be either

Title: comparrison
Post by: shegel on December 06, 2007, 09:22:58 am

pre-?=mech

post-?=hydro

Title: comparrison
Post by: jtanguay on December 06, 2007, 09:35:55 am

mechs are louder and have a little extra power.  there might be a sticker somewhere on the car that says you need to adjust the valves every 15'000km or however many miles.  if it doesn't have this it could have just worn off, but is probably hydro.

hydro pro's: no valve adjustment
hydro cons: sticky valve lifters

mech pro's: more power, no sticky valve lifters
mech cons: need to adjust valves on a regular basis.

i wonder if using really good oil could reduce the wear on the shims & cam... hmmm

Title: comparrison
Post by: shegel on December 06, 2007, 09:42:13 am

Quote from: "jtanguay"

mechs are louder and have a little extra power.  there might be a sticker somewhere on the car that says you need to adjust the valves every 15'000km or however many miles.  if it doesn't have this it could have just worn off, but is probably hydro.

hydro pro's: no valve adjustment
hydro cons: sticky valve lifters

mech pro's: more power, no sticky valve lifters
mech cons: need to adjust valves on a regular basis.

i wonder if using really good oil could reduce the wear on the shims & cam... hmmm

im really hoping i have the hydro head....if i look on the car for when its made when did they go to the hydrolic head.

Title: comparrison
Post by: burn_your_money on December 06, 2007, 10:16:45 am

Quote from: "shegel"

pre-?=mech

post-?=hydro

pre-86=mech

post-86=hydro

VW makes it difficult once again

Read this thread (http://forums.vwvortex.com/zerothread?id=2900427&page=1) and if you still have questions keep asking