Help with rebuild

[Markturbo]

hi

I recently brought the german R32 from Andy on here a couple of weeks ago, unfortuanley just 250miles in the bottom end started knocking (bad luck particually after choosing the car to get away from engine rebuilds, after already doing a couple in the lsat 2 years)

Anywho engine is now stripped, the rods are junk and the crank needs a regrind. The tomei pistons are fine, but one has some pitting in the side, I have been advised to change this piston, I was wondering what people would advise?

Do I

a) Replace the piston (can be brought seperatley), all the rings and circlips have them x-rayed, and balanced together

or

b) Buy a set of cosworth pistons and be done with it

only reason these two makes are options as there the only 2 i can find that make pistons in an 87.5mm

also any rods suggestions looking at brian crowner rods at the moment

Thanks for any suggestions

[ANDY H]

i got one tomei piston for mine and a set of rings from RB motorsport but remember you will need to balance the set again!

[Jimbostir]

^ ^

[Markturbo]

Originally Posted by ANDY H

i got one tomei piston for mine and a set of rings from RB motorsport but remember you will need to balance the set again!

Thats good to know thanks

Guess you just got a machining company to balance the lot?
Did you get your old pistons x-rayed?

[ANDY H]

my old pistons had done next to no miles! so no need!
i have a friend who does balancing!

[Jimbostir]

You should be able to tell by looking at them if they are ok, the problem was with the rods?

[Markturbo]

Originally Posted by ANDY H

my old pistons had done next to no miles! so no need!
i have a friend who does balancing!

Ah I see, these have about 11k on them

Thanks again for help

[Markturbo]

Originally Posted by Jimbostir

You should be able to tell by looking at them if they are ok, the problem was with the rods?

Ah thats o.k then, yer thats rights rod 2 spun a bearing

Thanks too you to

[.::TopSky::.]

You can always go 88mm and get HKS Step 2 pistons otherwise i say COSWORTH great pistons never heard anything bad about them!

Rods from famous CARILLO H-Beams will be an awsome choice, Alot of people go with Eagle and those people saying it wont hold 700hp can go **** themselves beacuse Eagle rods are used in 1300hp Supras and they HOLD! Those shops that say it wont hold say that beacuse they want to sell their other more expensive rods

[Markturbo]

Originally Posted by .::TopSky::.

You can always go 88mm and get HKS Step 2 pistons otherwise i say COSWORTH great pistons never heard anything bad about them!

Rods from famous CARILLO H-Beams will be an awsome choice, Alot of people go with Eagle and those people saying it wont hold 700hp can go **** themselves beacuse Eagle rods are used in 1300hp Supras and they HOLD! Those shops that say it wont hold say that beacuse they want to sell their other more expensive rods

Brilliant I'll have a look at all of those thanks

I have searched but I don't suppose anyone knows the stock journal thickness on an rb26?

Thanks again

[.::TopSky::.]

Originally Posted by Markturbo

Brilliant I'll have a look at all of those thanks

I have searched but I don't suppose anyone knows the stock journal thickness on an rb26?

Thanks again

No problem mate, There is some people running 88mm and they are happy

[Hja-Ozz]

Personally would only go to 87.5mm on an N1 or RRR block, if your on a standard block I wouldn't go more than 87mm.

[Markturbo]

Originally Posted by Hja-Ozz

Personally would only go to 87.5mm on an N1 or RRR block, if your on a standard block I wouldn't go more than 87mm.

Thanks for advice, the block is already bored to 87.5, but looks like the affected bore will be fine with a very mild hone, so hopefully staying with the tomei pistons

[Wade]

Feel so sorry for you Mark and only 250 miles in!

Atleast it seems you have a nice solid car and once shes fixed atleast you know exactly how the engine is. Keeps us posted

[Markturbo]

Originally Posted by Wade

Feel so sorry for you Mark and only 250 miles in!

Atleast it seems you have a nice solid car and once shes fixed atleast you know exactly how the engine is. Keeps us posted

Thanks mate, I apperciate it, i was completly gutted

But as you say i know whats going into it.

Looks like I'm going to be going down a full cosworth rebuild after discussions with Paul at JDM garage, and RK tunning