You are here

Decomp Plate

Does anybody know a reliable (preferably in Perth, WA) source for getting a decompression plate to suit a 186.

i've called the likes of repco, convertys and a couple of part stores, but none seemed to know what i'm talking about...it's driving me nuts,

also, are longer rods required?

Cheers
NoMAD

Engine: 
Section: 

Comments

Wouldn't longer rods defeat the purpose of a decompression plate?

Any decent machine shop should be able to make one up for you if you supply a block (or accurate drawing) for them to work off.

Visit My Shed

Email Me

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.

hes talking longer push rods, as in the heads going to be further away so u need longer push rods to reach the rockers.

Link to the Tunna Build

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.

Absolutly correct, the 202 pistons are shorter than the 186 and by running these you will lower the compresson to around 7.5 :1. Much better than decompresion plate. With the DPlate you will find u blow head gaskets, or are definanlty more prone to

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.

interesting....tell
me more about it!

'Later'

>Mail HERE..no bills!
>Ron's shed
>Cruising In SA.....The Shed

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.

>oldholden e-mail here!!

I HATE it when TV shows destroy the old classics........ The money they waste on destroying them, they could send the bloody things to me. I'd be more than happy to have them!

Those strata kits were designed to be bolt on? How much bost are you going to be running?
Ive heard of using two head gaskets.
Then agian, ACL should be able to do a copper head gasket to your desired thickness.
Got any HQ racers in your area, go ask them questions, although they arnt turbo boys, they will have a good idea who in town is usefull with 202's.
>Trenton's Email

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.

I know your after a decompression plate but, just for your info, I had a 186 (out to 192) some years back and during a rebuild of the engine we fitted new (supposedly 186) pistons. The engine wasn't making the power we thought it should, and finally after much checking we found the compression was way too low, should have been around 190 but I think we had about 140 from memory. Anyway it turns out our 186 pistons appeared to have been stamped wrong from the factory, I think from memory we had worked out they were 202 pistons. Worth looking into as it saves problems with pushrods and blown head gaskets (having to use two), this way you build the motor as you would normally and bolt on a turbo. minimal problems. Pitty I didn't have the funding at that time to just bolt a turbo to that motor, it would've been lethal - then again, maybe it's better I didn't have a turbo on it back then??
Cheers
Bruno

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.

Pretty sure they are listed in the ACl gasket cattledog, check that out

  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.
  • Like0
  • no like0
  • Holdenpaedia idea0
  • Funny0
  • Wrong Category0
Please use, Holdenpaedia will get the first box on the left side. Post any suggestions.