Not a 370z, but... VQ35HR ST (VSR) Begins

MidnightBlueZ

Talk to Bobby, he has told me the HR heads are pretty common and cheap. Shouldn't be bad to replace or rebuild yours if that's all it is..

COSMO

I have seen used motors around $3000 but the ultimately is your choice..

SlowZ

Andddddddd another HR blown by VSR

hjo1078

good luck mad jelly, are you in alexandria ?

mad_jelly

Not at all. Car could have had a burnt valve before the turbo was installed. I did not perform a compression and leak down test before sending it off. If anybody is to blame, it is myself for not doing my due diligence before sending it off.

mad_jelly

no, im in fairfax.

mad_jelly

Cylinder 1 was done, 40% leak. Going to do a modest build I can beat on at the track.

MidnightBlueZ

Bummer, so was your engine feeling sluggish before you went in for the turbo kit? Atleast you'll be confident your engine can take the beating once built.

COSMO

I wish I knew because I would have given you my heads off of my long block.

1slow370

Do you know why? If it was a blown ring land then yeah it was a detonation failure, but good luck trying to get the real answer as to what failed.

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COSMO

Here we go...

mad_jelly

Couldn't tell you. I hardly drive it. I drove it to work the day I transported it, but prior to that, its been sitting since the last track day in November.


Appreciate it! but VVEL heads sound too fancy for my 07


Nope, I don't know why; and like I said before. It was my own fault for not doing a compression and leak down test prior to sending it off. Nobody's fault except my own at this point in time. It's very possible that I sent VSR a busted car.

Bobby has been straight forward with me throughout the turbo install. Yes, the one week turn around turned into months, but **** happens and timelines get pushed back. His welder got into an accident and was in a wheelchair welding up IC to button up my car.


I really hope this thread doesn't become full of speculation and hate. There is literally no point and no facts to point fingers (100% my fault at this point for not doing my due diligence prior to sending the car out)

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I really didn't intend to build out the car but with my second kid on his way (any day now), I really didn't see another opportunity to do such a silly thing and enjoy the toys I have. Maybe I could have saved a little money and bought a used motor off of ebay for 3k, install it myself and have it retuned. But let's be honest, for those that are parents, how much time do you really have at the end of the day. It would have taken me at least 3 months, assuming I don't run into gremlins on the way.

From my limited experience with Bobby, he seems like a stand up guy and has been a great person to work with. From the number of threads i've read, VSR does follow through with their promises. Granted, there might have been missed deadlines, but what project doesn't get pushed a little?

Again, i hope my story ends well as it has for various other people on this forum.

PS. Shooting for delivery by the next Trackday of Oct 4. fingers crossed!

MidnightBlueZ

Haha sorry I was referring to the HR heads not the VHR heads. He told me this because they can apparently be swapped and do away with VVEL. Although you may have to change ECUs or something never got that concrete answer.

mad_jelly

gotcha, I may take you up on these if the machine shop finds something else wrong with my POS car.

I've been told that the HR heads are one of the better heads available for the Z platform.

mad_jelly

Car goes under knife today.

I am really starting to itch.