Engine Rebuild Update: Block resleeved & rebored + purchased an ATI Super Damper

The machine shop has returned my spare block and I must say that I am quite pleased with the work done. It has been resleeved and the rebored to once again accomodate the HKS 88mm forged pistons. The reason behind the resleeving is to strengthen the block and as an added measure to ensure the longevity of the new engine. Below are pictures of the finished item:

Next up is to port and polish the head, which is already underway as we speak:

I've also purchased a ATI Super Damper today. The RB crankshaft, being in a straight 6, is quite long and thus prone to torsional resonances at lower frequencies. Without a mass damper tuned to the cranks natural modes of vibration, one could get some nasty and sometime fatal twisting of the crank. This resonant twisting can also break the oil pump. Hence it is crucial to have when rebuilding an RB26 engine thats pushing out more than stock power. Its certainly not cheap but definitely gives you peace of mind.

Thats all for now. Till next time, stay tuned.

Spare Engine Rebuild Update

Please refer to a previous blog entry on my purchase of a spare RB26DETT head and block, if you do not already know the story behind the rebuild.

Due to the limited availability of aftermarket RB26 parts locally, my tuner thought it best that I purchase items that we had reserved at several Sunway shops. 

His fear was that, since these reservations weren't firmly tied down with deposits, the vendors would have no qualms in selling the parts to walk-in customers. And so today we went out and visited the usual haunts of motorheads in and around Sunway. 

So while the block was being re-sleeved at the machine shop, we went to ST Wangan. We were there for the following items:

Jun Oil Collar 

ARP Bolts and Studs

Our next stop was Samurai Racing for the Greddy Oil Sump.

It will take sometime to rebore the block and port the head, so stay tuned till then.

Purchased a second RB26DETT engine for my rebuild project

It has always been my intention to purchase a second RB26DETT. The aim was to rebuild the engine and when it was ready, pop the new powerplant into the R33 GTR. That way, I wouldn't experience any downtime and the car would not be stuck at the workshop for weeks on end. It'll also mean that I will be able to install the performance engine parts that I've been stockpiling since last year (please refer to this earlier blog entry).

Lo and behold, I was able to fulfil this goal recently. A friend of mine was looking to sell his R32 GTR's bottom block along with a R33 GTR head. He has recently embarked on a RB30DETT project and as such, will not be able to utilise the bottom block. Whats interesting about this block is that it has been rebored to fit HKS 88mm drag spec forged pistons.

One of the HKS 88mm forged pistons

The actual bottom block

After carrying out the necessary machine shop tests to check the health of the pistons as well as the bottom block and the head, I decided to purchase the lot. The pistons are in excellent condition (near new in fact), the head needed only one minor weld and skim work, while the block itself passed the water leak test. Whats especially pleasing was that the crank was not bent.

The R33 GTR head

Stock RB26 oil and water pump, which will be replaced with Tomei Oversize Oil Pump and a N1 Water Pump

Work on this second engine will start after Chinese New Year holidays and I can't wait to source all the necessary parts like Nismo bearings :).

 All of that came from this particular R32 GTR engine