Engine and Frame Ti Bolts Kit

[Mythos]

I’d buy the SAE kit.

What confused me was that the DME ad calls them frame bolts and head bolts, the SAE ad calls them all motor mount bolts which all of them are. After looking at this in greater detail and comparing bolts in the kits to parts fiches, the difference is the DME kit has two small subframe bolts and the SAE kit has 8 small header bolts. Both kits have the two long motor mount bolts in the rear and the four motor mount bolts up front. Both have motor mount pinch bolt and all rear suspension bolts. Both have nuts for all bolts where required. DME's kit has tapered head caps for the shock and SAE's are parallel head caps.

The DME ad says "suitable for replacing grade 5 and grade 8 bolts" and "45% lighter."

The SAE ad says "Made from superior Grade 5 6AL4V material" and "Titanium saves an average weight of 40% over steel."

Sounds like the DME kit may be a little stronger alloy and maybe a tad lighter. The DME kit has rolled threads, IDK if the SAE kit does.

$725 for DME

$429 SAE

This is looking like a no-brainer. I'm not paying another $300 for the same kit except it has subframe bolts instead of header bolts. I'd use aluminum for the subframe anyway, nobody sits back there and I'm going with an aluminum subframe. Also, if I'm going to torque an allen bolt, I'd prefer it to be a parallel head cap rather than a tapered head cap.

You were right.

 

[Dai.]

I ordered Ti for the subframe anyhow. Could’ve gone Aluminium but had the Ti left over.

 

[Mythos]

I got the SAE Ti engine and suspension kit yesterday. Looks good. I measured all the bolts and looks like they are the correct length or within a millimeter or two. The front engine mounts on one side are about 4 mm shorter than what Babbit's lists for OEM bolts. From the lengths listed in the ad for the DME kit, the front RH engine mount bolts are also a tad shorter than OEM. Babbit's doesn't list the lengths of a couple of the shock mount bolts but I'm pretty confident they will fit since it appears all the others are very close to OEM length. I can't say if the threads are rolled or cut but for a savings of $400, I don't care. The nuts spin freely over the threads. I have seen threads on a stainless fitting that had very round crests and valleys and these bolts do not look as precise as that. I don't know if they are as strong as grade 8 like the DME kit lists their kit to be. Grade 5 should be good enough. I have a feeling I read a thread comparing the DME kit and SAE kit about 7 or 8 years ago. If there was a problem with the strength of the bolts, you'd think they would have updated them or discontinued them by now.

I will list the weights compared to OEM as I get them switched in. From the weight of the whole kit, I'm estimating a net weight reduction of about 1 and one quarter pounds.