engine movement

[Barron]

Hi, first time ive driven my 172 since engine transplant today. There is a little bit of movement when accelerating with the engine. Its normall low down revs, when you plant your foot the engine and box jump forward.

Which mount needs adjusting to solve this?

/carl

 

[bmh.01]

If its not knocking then its normal.

 

[Ricardinho]

engine mount? dunno

 

[Barron]

If its not knocking then its normal.

ah ok so when you plant it from low revs the gearbox does jump abit?

/carl

 

[Barron]

engine mount? dunno

aye theres 3 mounts in total though, just dunno which one may be to blame

 

[Chrisjk]

Worth checking the upper engine mount 1st, then the upper gearbox mount.

 

[Batman]

carl, how would you see that the engine is jumping forward when your putting your foot down from inside the car? and the engine naturally jumps back when you put your foot down hence why alot of people get the manifold banging against the subframe

 

[Chrisjk]

carl, how would you see that the engine is jumping forward when your putting your foot down from inside the car? and the engine naturally jumps back when you put your foot down hence why alot of people get the manifold banging against the subframe

You can feel the movement whilst driving, all 3 of mine went and you could really tell.

 

[Batman]

i dont see how your can tell that the engine is moving in the bay yes mayeb hear it or see that the gear stick is moving forward back which can relate to block movement but you cant physically see and know that the engine is indeed moving sonny

and i've had allsorts of problems with my mounts all have been replaced and one twice only symptom i've come across is knocking end of

 

[Barron]

carl, how would you see that the engine is jumping forward when your putting your foot down from inside the car? and the engine naturally jumps back when you put your foot down hence why alot of people get the manifold banging against the subframe

You can feel the movement whilst driving, all 3 of mine went and you could really tell.

yeah it feels more gearbox related to be honest :boring: was just woundering as the car has only done 400 miles in with the new engine so i think ill have alook at the mounts sometime this week.

/carl

 

[Rich_rs182]

Hi, first time ive driven my 172 since engine transplant today. There is a little bit of movement when accelerating with the engine. Its normall low down revs, when you plant your foot the engine and box jump forward.

Which mount needs adjusting to solve this?

/carl

theres alot more extra ponnies under that bonnet than ya rep mate so u not used to it lol, engine does move when planting ya foot down unless theres knocking i'd say its normal

 

[Barron]

Hi, first time ive driven my 172 since engine transplant today. There is a little bit of movement when accelerating with the engine. Its normall low down revs, when you plant your foot the engine and box jump forward.

Which mount needs adjusting to solve this?

/carl

theres alot more extra ponnies under that bonnet than ya rep mate so u not used to it lol, engine does move when planting ya foot down unless theres knocking i'd say its normal

aye probably is lol im just picky and trying to make sure its perfect before its on the road.

p.s did you get that nut mark?

/carl

 

[Batman]

best way i know is to get hold of the engine and give it a good shake their shouldnt be much movement, and the engine wants to be pulled as far forward as pos

 

[Batman]

theres alot more extra ponnies under that bonnet than ya rep mate so u not used to it lol, engine does move when planting ya foot down unless theres knocking i'd say its normal

aye probably is lol im just picky and trying to make sure its perfect before its on the road.

p.s did you get that nut mark?

/carl

nah halfords only went upto an m12 so having to go eslewere for one got the nitromors though took the tint gluw off straight away and tow eyes are now painted white

 

[Chrisjk]

best way i know is to get hold of the engine and give it a good shake their shouldnt be much movement, and the engine wants to be pulled as far forward as pos

Thats how i properly knew it was gone, i had a bout an inch of movement by hand, its was very easy to do as well. Also the feel whilst driving, its hard to describe, there wasn't a knocking but a delay between clutch bite and movement of the wheels, it was odd. When i went to change the mounts it was obvious they had gone as the gearbox mount had blown and perished and the upper engine one had completely split in two.

 

[DrR]

hmmm my engine moves about 2 inches by hand. easy.

 

[Batman]

lol 2"'s? thats alot unless of course you have tree trunks for arms

 

[bmh.01]

engine mount? dunno

aye theres 3 mounts in total though, just dunno which one may be to blame

There should be 4! The upper engine mount, the upper gearbox mount, the dogbone mount and the 4th mount on the gearbox to subframe.

 

[Barron]

aye theres 3 mounts in total though, just dunno which one may be to blame

There should be 4! The upper engine mount, the upper gearbox mount, the dogbone mount and the 4th mount on the gearbox to subframe.

aye sorry 4 :rasp: think its probably best just checking them all

/carl

 

[bmh.01]

Ah cool, well they'll never be 100% solid as they don't want to be and as you've got a solid gear linkage you'll always have some feedback from the engine/gearbox movement.

It should be less than the 1.2 but it'll still be there, it depends what you call excessive.

 

[Barron]

Ah cool, well they'll never be 100% solid as they don't want to be and as you've got a solid gear linkage you'll always have some feedback from the engine/gearbox movement.

It should be less than the 1.2 but it'll still be there, it depends what you call excessive.

its only under fast acceleration from low revs, it jumps back and then carrys on like normal. Its more noticable than my 1.2 in all honesty but as ive said the engine has only done 400 miles since ive put it in so may go back to check all mounts

/carl