Engine question

[Sweetlou0069]

Thebacrew of my muffler on my engine are screwed up , they don't tight anymore. So if I order something like this could I just swap the head or is there a possibility it wont be the same fitting ? My engine is a zenoha and this pic is rovan

 

[Z.hb71]

Thebacrew of my muffler on my engine are screwed up , they don't tight anymore. So if I order something like this could I just swap the head or is there a possibility it wont be the same fitting ? My engine is a zenoha and this pic is rovanView attachment 55814

ast time you said your engine was a rovan, now your saying it's zen, what is it really??? In the case if it's actually a zen, don't, those China special kits are trash,just buy a replacement cylinder. If it's a rovan, don't, just buy a zen ?
Pretty sure, you can also helicoil the threads

 

[Top Dead Center]

Helicoil

https://www.mcmaster.com/helicoils

 

[Sweetlou0069]

ast time you said your engine was a rovan, now your saying it's zen, what is it really??? In the case if it's actually a zen, don't, those China special kits are trash,just buy a replacement cylinder. If it's a rovan, don't, just buy a zen ?
Pretty sure, you can also helicoil the threads

Lastvtime I did a mistake it's written on it zenoah. I'm just not 100% sure if its 30.5 or 32cc tryingbto local it but having a hard time
What is helicoil ?? Like make th bigger ?? If so the previous owner already didvthat

 

[DougStar]

32 has port covers on the head
23/26/29/30.5 dose not??

 

[Top Dead Center]

 

[Sweetlou0069]

32 has port covers on the head View attachment 55817
23/26/29/30.5 dose not??

I will check tomoro but I don't think I got that.. shoujdnt it be written on it somewere any ways how many cc is
OR something like that? and were would I order zenoha engine parts ??

Helicoil

https://www.mcmaster.com/helicoils

Thx

 

[evssv]

ddm for most parts if ur in usa?

 

[Z.hb71]

Ddm has zen parts ?

 

[siblues]

I don't know if you have any friends who are mechanics but if you do I would Time-
Sert it.Helicoils are good if done right but they don't hold a candle to aTime-Sert.Time-Serts are the preferred repair on automotive forced induction repair for stripped head bolts.I would think for these little engines the helicoil would work perfectly but that all depends on the previous repair.

 

[Sweetlou0069]

ddm for most parts if ur in usa?

Thx

 

[Seandonato73]

A time sert or lock n stitch repair would be a waste in this application. The helicoil would work just fine. The cost of the inserts alone would make a new head look cheap. Let alone buying the tooling to install them.