Do i need a new head?

[01bansheefox]

I took my motor into the yamaha dealership and the guy before me used a screwdriver to get the head off so it has little knicks on the outside of the head and they claim I need a new one and want to charge me $385, Its not a stock head. Mono Block head from Pro-X- Would this be true or do you think they are just trying to get $$$?

[Ducman]

Sure doesn't sound like it to me. Did they give a reason other than the cosmetic screwdriver damage? Also, a new aftermarket head is no more than $265 including domes.

[01bansheefox]

Nope they just said the markes on the surface were not repairable to deep? And a new one is around 385, Im just pretty much asking with marks on the surface of the head effect the engines performace? They also told me the top end kit is $125 per piston. I dont know but some how the total was like $1250 just for a topend rebuiild with the head.

[banshee76179]

U can find a cheaper piston kit prolly for a little bit more than the stealer..ANd as for the head NOSS HEADS DL is a member on here and he might give u a discount I know he is a lot cheaper than $385

[SDD]

U can find a cheaper piston kit prolly for a little bit more than the stealer..ANd as for the head NOSS HEADS DL is a member on here and he might give u a discount    I know he is a lot cheaper than $385

292681[/snapback]

 

 

You guys need to read his post a little more carefully... He said it's for a ProX monoblock cylinder.

[01bansheefox]

Ya my engine is not stock it has a custom mono block and only 1 type of head will fit it. I use the Procross 409 big bore kit by La Sleeves.

[sheefreak]

Depends on how bad the gouges are, if you cant get a head gasket to seal it, you are screwed.

[01bansheefox]

well i guess its hard to tell because it doesnt use a gasket, it uses an O-ring that sits inside some grove in the cylinders. Then you just bolt the head down.

[banshee76179]

You guys need to read his post a little more carefully... He said it's for a ProX monoblock cylinder.

292685[/snapback]

EXCUSE ME buddy, didn't know it took a special head and cylinders....

[FORMULASPEED]

got any pics??

[Machwon]

How bad are the grooves? Do they go from the water jacket to the dome area to outside the cylinder?

 

Even so I would put it back together using JB Weld, let it set for a day, and give it a try. Watch the coolant level while you do it just to be sure.

[FIRST BANSHEE]

did the screw driver only damage the head... the block and head are made of the same material,

I believe if the gouge doesn't go past the o-ring you should be able to sand the high spots down, if they go past the o-ring it might not seal.

[01bansheefox]

Most of them are right on the outside of the head, it looks like he used it just to hit it with a hammer or something to pry it off the block, some might be right next to the o-ring if that. Just trying to avoid another $400.

[frocashmoney24]

if they dont go beyond the oring then it shouldenet leak, if its on the outside of the head you should be fine, put it on and give her hell

[FIRST BANSHEE]

Most of them are right on the outside of the head, it looks like he used it just to hit it with a hammer or something to pry it off the block, some might be right next to the o-ring if that. Just trying to avoid another $400.

292916[/snapback]

make sure you sand the high spots level, maybe a little silcone around the outside by the gouges.I would try it first, if it leaks then replace it.