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#1
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head studs
Hi all , can anyone tell me where to purchase a stud kit to replace the head bolts on a d24t
Many thanks Axe |
#2
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I got mine form Raceware, and they appeared very nice.
PN RWE-1010. I followed these instructions to a T, the head has held for years. The nut end threads are much finer than the block end ones, so 50Ft/Lb gives loads of clamping force. Quote:
Last edited by 745 TurboGreasel; 05-17-2013 at 11:49 AM. |
#3
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I also installed a set of Raceware studs earlier this year and was impressed as well. Just ordered 2 more sets. I don't think I will ever use the stock TTY bolts again. The stud kit is not cheap, about $300 USD, but installation is pretty simple, they are reusable, and most of all they seem to do a stellar job keeping the head sealed up -- not a small concern on these motors....
ARP also makes studs that are compatible with the D24 setup. Haven't tried those firsthand but they have an equally good quality reputation and may be slightly less expensive. On the other hand, Raceware is great in that they make a kit packaged specifically for the D24/T whereas ARP does not -- you have to buy their kit for a 4cyl VW diesel, which is short 4 sets of stud/nut/washer, then add the missing pieces a la carte. I'll keep buying Raceware stuff since I know I like their product but I am sure you can't go wrong either way. |
#4
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I've used ARP on other engines, and visually, they appear to be not as nice in the care and finish department. Strength wise, no problem.
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#5
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Quote:
Wonder if metal vs fiber matters much if the studs are used. I used a Reinz fiber gasket in the one I did with studs. The metal gaskets are cool but becoming difficult and expensive enough to get now, it's almost the same price to do studs + fiber as to do MLS + bolts, and I think I would prefer to spend my $$ on studs rather than the metal gasket. I guess MLS + studs probably is the #1 setup assuming gasket surfaces are perfect too, but puts your investment in head gasket + hardware above $400.... Dunno if the gasket performance difference is enough when studs are in use to justify the price differential. My thinking is that the studs are able to put enough squeeze on, with their different thread pitch, that either gasket type probably does the job more or less equally. |
#6
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I don't think so, or the newer VAG motors would have fiber gaskets. IMO stretch bolts work fine, but are a poor choice where head gasket replacement is common. If I was running a motor where it was always the bottom end that gave out, I'd use stretchies all day.
Due to availability, I'm running a Reinz( I think) fiber gasket which I now know cost more through Worldpac than an MLS shipped from Europe. At the time I hoped that since it cost double my previous Elring it should be MLS...the shop was unable to tell me in advance, and in disgust I installed it. IMO the Elring only failed because my head wasn't smooth. |
#7
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I have never bolted a head on a d24 or d24t without using studs. I Use arp studs designed for the 1.9 tdi. I buy several sets at a time. I can vouch for the arp studs, I have 20,000 miles on my d24t with max fuel on a consistent 20 lbs of boost, I don't have a waste gate so I have seen boost numbers in the mid 30s. I'm using a fiber 3 notch.
I'm not sure about the race ware studs but the arp studs are undercut, meaning they have a real thick shank near where it threads into the block and the length between the threaded points is thinner. The point of that is to get the best of both worlds, the even clamping force of studs and the stretch needed for expansion/ contraction of the aluminum head. I will get a picture posted of a stud. I have always used traditional studs in previous engine builds with great results and was a little sceptic about using the undercut studs, but they have done a great job on my 244.
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12mm pump heads, ARP stud kits and GTD nozzles available! http://d24t.com/showthread.php?t=1646 NA intake manifolds and 240 turbo pans for sale. Need d24 or d24t parts? PM me! Shipments done on fridays! 1982 242 D24+T/M46- Super pumped! Build thread: http://www.d24t.com/showthread.php?t=1545 1984 764 D24T/ZF build thread: http://www.d24t.com/showthread.php?t=1734 Diesel parts cars: 82 244,83 244, 84 244, 84 245, 85 745 |
#8
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Here is a picture of an arp stud and a factory TTY bolt side by side. Notice the bulge at the end of the coarse threads on the stud and thinner shank.
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12mm pump heads, ARP stud kits and GTD nozzles available! http://d24t.com/showthread.php?t=1646 NA intake manifolds and 240 turbo pans for sale. Need d24 or d24t parts? PM me! Shipments done on fridays! 1982 242 D24+T/M46- Super pumped! Build thread: http://www.d24t.com/showthread.php?t=1545 1984 764 D24T/ZF build thread: http://www.d24t.com/showthread.php?t=1734 Diesel parts cars: 82 244,83 244, 84 244, 84 245, 85 745 |
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